- Let's see how the new board works GR-wise
- dark energy
- Schwartsschild from Newton + Relativity
- planck
- New Bojowald paper---BB non-singularity continued
- Expansion slows down and then speeds up
- How General R disobeys the (Special R) speed limit
- Big Bang Bandwagon
- A dumb question from a layman
- Cuestion of black holes
- Gravity bends matter?
- slice of pie
- lambda
- New test of GR - verified to 1:20,000
- conservation of linear momentum at relativistic speeds
- stress
- Theory of FTL
- "Creational Theory"
- evidence for length contraction
- Theoreticly...
- The transference of potential energy to kenetic energy and it's effect on momentum
- Q'izing GR retains local Lorentz invariance after all?
- new speculation about cause of dark energy
- Gravity in relation to time
- Online text
- Tensor
- just what we need, a finite dodecahedral universe
- supposed c-decay
- Laser Light vs Gravity
- Could someone explain Brans-Dicke theory?
- The Unexistence of Singularity Inside the Event Horizon
- Strange Black Hole Question
- General Relativity..imcomplete?
- Red shift frequency from a black hole...
- fomula?
- BlackHole Gravitation
- speed of light question
- "Speed" of gravity. Whats the problem.
- New Lineweaver paper/Superluminal expansion speeds
- speed of G
- g w do not exsist?
- Q G in trouble?
- Christoffel
- Spherical Geometry and Flat Geometry Space-Spacetime's
- time dilation
- ss crack up
- Energy Redshift Paradox
- New Bekenstein paper on BH and Information
- age of the universe
- Special Relativity
- The further development of special relativity.
- Length contraction problem
- does relativity imply alternate realities?
- A few questions about GR
- blow to quantum gravity
- [SOLVED] Gravity and time, am I understanding this?
- Ether Test Flaw?
- Light
- General Relative-Field Theory
- One unanswered question about Aether
- Causality and FTL Signals...
- Relativity Paradox
- Photon's Mass?
- GR's Tests
- Relativity of Mass or 'Weight' ?
- is moon there or not
- spacetime
- 1 day is not 24 h
- Pi and Space-time
- Equivalency question
- Weax
- testing quantum gravity
- Speed of Light
- Radioactive decay in relativistic frames
- Explain Aether
- Relativistic Invariance
- Strings, gravity and dark matter
- Spacetime distortion - question
- Space dynamics in GR anaylysis of black holes
- is a "photonic-boom" possible?
- velocity
- Black Hole Geodesics
- Time dilation sanity check
- Velocity question
- Newly Discovered Binary Neutron Star - GR implications
- need to remember something
- Modern Special Relativity and Mass
- Relativity
- Frame dragging by a black hole
- Special Relativity to blow your mind
- maxwell's eqn in invariant form
- Einstein's E=mc2 'was Italian's idea'?
- What is an inertial reference frame?
- Speed of Light Remains Constant
- tests of Lorentz violation
- Cosmic Physics: the High Energy Frontier (by Floyd Stecker)
- Three papers by Kowalski-Glikman
- If I drop a key....
- Is Acceleration Relative Or Absolute
- Question regarding explanation of impossiblity of faster then light travel speed
- Notation of General Relativity
- Is special relativity consistent with thermodynamics?
- Question about photons and relative velocity.
- Covariance
- What if the speed of light was slower?
- information not light
- Time changes in gravity field.
- Wheeler-de-Witt equation
- speed of force
- What if speed of light was Faster? Would TIME travel be prohibited?
- SR and the earth, sun, and galaxy.
- How does SR work at speeds greater than c?
- Albert is Still Looking Good.
- The relativistic bullet
- [tex]E = -\nabla \Phi - \displaystyle{\frac{\partial A}{\partial t}}[/tex]
- Proving one of Einsteins formulas (Kinetic energy of an object)
- Michelson Morley Question
- E=MC2: does this prevent a Mass from achieving Light Speed?
- time dilation
- Groups in GR
- Einstein as a boy
- Olaf Drayer-New Hints from General Relativity
- GammaRayBursts as standard candles to judge dark energy
- Thought experiment for using Black Holes for cmmunication
- Einstein's Box
- Speed of light an absolute?
- Question about black holes
- expanding people in an expanding universe?
- invariant fine structure
- Relativistic Kinematics
- E=MC2: quantum or relativistic effect?
- Increasing expantional speed of the universe
- Viability of Relativity.
- I admit, I only had wrong impression
- Two kinds of "time"
- stars closer than thought. How the sun affects the light path
- Energy, Mass and Expansion of Universe
- Space-time travel question
- Mass Tensor
- I'm sure this has been asked a million times but,
- Relativistic Mass as "Gravitational Charge"
- tachyons
- Electron beams and an inertial frame problem
- red shift jumps
- Einstein's equation
- Relativistic Car Paradox
- multiple universe
- Speed of Light
- Clocks On The Space Shuttle
- FTL Gravity wave spatial transmission
- Some confusing things
- Light Clock
- Question on simultaneous events.
- magnetic distortion of spacetime
- Hafele and Keating Experiment
- Looking for the Ether !!
- Can you speak English for a lowly S/W Dev?
- Schwarzschild Metric Question
- gravity caused by curved space - am I right?
- bending of light
- What is space-time "made out of"?
- Forgive my ignorance
- planck
- SR question
- Gravitational blueshift
- Gravitational Lensing
- evidence against planck scale?
- Longitudinal and Transverse Mass
- time speed question
- another time speed question
- history of big G
- r t cahills theory of gravity
- How did Einstein do it?
- metricmeter
- Timelike geodesics might not be maxima of the proper time
- time dialation formula
- No Boundary Proposal
- "Astronomy" says light slows down.........
- Question about Special Relativity
- Special Relativity in a Periodic Universe
- Time Dilation Question
- self creation cosmology
- A New Approach To Qg
- Giovanni Amelino testing QG
- Can we measure absolute velocity?
- What is the Universal Gravitational Constant?
- Experimental proof of Mach's principle?
- Aberration of starlight
- space and matter
- The speed of light in a Schwarzschild space-time
- Just a simple problem
- Jack and Jill twins
- Schwarzschild Metric Question...again
- cosmological constant problem
- Expanding space
- One way Speed of Light measured by a Single Clock
- About rotating reference system
- Time dilation relationship between gravity and velocity.
- Gravity- time dilation
- A question regarding D'Invernos Introducing Einsteins Relativity
- space probe b
- Unit of Tensors
- Serious questions on SR
- Ether
- This forums description
- speed of light-can this be correct?
- I can't get it through my head!
- Learning relativity
- Lenght contraction experiments.
- Gravity/speed of light
- laws in freely falling elevator
- Time vs Space
- gravity probe b
- Who give me some references to Kaluza-Klain's theoy in 5D?
- Einstein on "Gravity is geometry" in GR
- Einstein and gravity
- Non-symmetric gravitational theory (NGT)
- donuts at the speed of light!!
- G.u.t.
- Definition of relativity's "interval"
- Speed of light Schmeed of light: things can travel faster
- Was Einstein really a genius?
- Spacetime Diagram
- SR effects, Twin Paradox
- Centrifugal force
- What exactly are Lorentz transformations?
- How do physicists do it?
- Rotating mass increase?
- relative time notation
- why is "c" even in the equation?
- Relative antiparallel photons generate Q. M.?
- SR clarification needed
- light in the wake of huge objects
- time travel to the past
- Amazing new experiment proposed
- doesn't light's constant speed dictate an 'ether'?
- Magnitude of a 4-vector
- mass change
- Speed of light through glass
- Testing General Relativity, and perhaps Quantum Gravity
- IMPORTANT! Read before posting
- time dilation and light...
- gravity hysteresis.
- Doppler & Absorption
- Photon Doppler Shift???
- Flattening out the curves.
- Mass increasing with energy
- Stationary Photons
- Kerr Metric
- What happens to mass at the speed of light
- Space shrink near black holes
- For?
- General Relativity and relationism
- Black Hole Questions
- Satellite to test Einstein's predictions
- Quick question on where to apply time dilation.
- is light 'static'?
- Movement through time?
- Can space tear
- Is Space Three Dimensional?
- Dsr?
- Why c?
- C through fiber optics
- Questions on Mach's Principle
- Applying the lorentz transformation
- What did I miss on this one?
- quantum gravity and planck scales.
- The Peripatetic Albert
- has light wavelength compression been proven?
- Twinship, an attempt to understand SR
- how can mass equation rely on 'rest mass'?
- The Peripatetic Albert - Warmup Lap
- Time Dilation different depending on cause?
- rotational kinematics
- The Pugilistic Albert - Round 1
- Penrose-Terrell rotation
- The Pugilistic Albert - Round 2
- This "relativistic kinetic energy" equation makes no sense to me
- countdown..
- Photon's mass?
- The Sophomore's Crack
- Speed of light in a comoving frame
- Relativity and accelerating observers?
- baez relitivity
- A newbie question on time dilation formula
- Charges in gravitational fields
- [SOLVED] Need help with derivation
- Mass distorting spacetime
- Relativity Rocket...
- experimental analysis
- Teleportation (like a StarGate) and Time travel...
- Does expansion imply a metric
- More Math Help with Albert
- Misunderstanding of SR
- Invaraince
- interesting overveiw
- GR and SR and the speed of change
- General Relativity (Help)
- Question Regarding. Gravity, Relativity and Curve Space
- The Pugilistic Encarta
- Rappidly Spinning Mass
- Before and After?
- help me in mach's principle
- Is Time Location Dependant?
- FTL Question
- description of spacetime
- Question about frames of reference and clocks!
- C
- Nature of the cosmological constant
- Transverse Doppler effect
- Four vectors and Lorentz invariance
- dark stuff
- relativity and space travel - what's the problem?
- One-off: "Black drop" problem an SR effect?
- we see light?
- The Parabolic Aphos
- The velocity of light is constant?!
- Fractal Space-Time and Microphysics: Towards a Theory of Scale Relativity
- Riding on a beam of light?
- Time ...
- Background independent
- Tired Light And Redshift
- Time Dilation Paradox
- Mass and Curved Space Question
- Energy in Special Relativity
- Geometrodynamics
- deflection of light
- Angular contractions?
- Experimental support for SR & GR
- Positively and Negatively Curved Space-time
- The concept of mass in relativity
- A little math help?
- Set Up
- Relativity
- Acceleration by the Casimir effect: violation of relativity?
- Faster than light paradox
- Why relativity is right
- Einstein did not derive E =mc2 first
- Redshift
- Lorentz transform and muon half-life, Help, please!
- Ignorant Question
- Why is then Time Travel possible?
- Where is my error?
- The Derivative of Lorentz Transformation
- (1 - 2 GM/ r c^2) ^ 1/2 and Big Bang
- Why do people talk as if the Twin Paradox is problematic?
- Quick Question about Gravity
- Multiple big bangs.
- Maximum Temporal Distance Between Events That Are Simultaneous in Another Frame
- Can light be instantaneous and yet measured as 'c'?
- Energy not defined in GR?
- simultaneity paradox
- Gravity is faster than light?
- v = c
- inertial reference frames
- Gravitational lensing with Fourier transforms
- Riddle of Sorts
- Relativistic Doppler effect (for sound?)
- superfluidity and gravity
- Does a black hole surface exhibit resonances?
- Conundrum Regarding the Lack of an Absolute Frame of Reference
- gravitationally accelerated electron
- Same Place Same Time
- Counter rotating frames
- An honest question about time dilation in SR
- Riemann and Hamilton; help
- Riemann-Christoffel Covariant differentation
- I can't see how stress-energy tensor meets the minumum tensor requirement
- 2 questions
- Yet another blackhole theory
- matter spacetime
- movement through space or movement through time?
- [SOLVED] Calculating speed from acceleration
- Lobo & Visser on Warp Drives
- Spacetime Paradox?
- Questions of the equivalence principle
- SRT 99 years going on 100
- Space and Time question...
- general relativity and newton's laws
- Equivalence principle + light speed postulate =
- Speed Of Light Question
- Einstein's Train and a simple consequence
- curvature and General Relativity
- equivalence and derivation of general relativity
- Relativity Paradox
- I need to know...
- new constraint on space time?
- gravity and LIGO
- entropy and black holes
- Interference in time
- LIGO and speed of gravitational waves
- two event horizons in close proximity
- official speculation as to constant c
- pressure creates mass
- Curvature of reciprocal Euclidean space
- Speed Increases Mass?
- temperature of black hole
- sagnac effect- the maths
- Does the gravitational force actually exist?
- Strange SR paradox
- dark energy ,cmbr and curvature
- atomic clock time dilation
- What did Al mean?
- Time Dilation and Gravity
- Equivalence principle at a gravitational singularity*
- Does mass decrease with expansion
- Elecron pair
- speed of light broken?
- Space and time
- Learning GR
- Time Distortion
- Shape of the Universe
- higher dimensions
- EM gravitation
- What is 'mass'?
- Time?
- How do you explain c?
- Time Travel just not possible!
- Is this true???????
- Energy
- Does relativistic mass have a gravitational component?
- uniformity of dark energy distribution
- black hole entropy
- Question about special relativity
- Solution to GR Field Equations
- SR: Time Dilation
- Quantum relativity for small hab ?..
- variety of metrics
- dought regarding equivalence principle
- Taking Time as the Fourth Coordinate...What are the implications?
- Einstein's Inconsistency?
- Those who use relativistic mass and why
- Weyl Curvature, Mach's Principle, and Heisenberg Uncertainty?
- relativity and infinities
- Einstein's field equations
- The uniqueness of EM light
- Help Please
- What is the Speed of Light, Dark Matter?
- Human & Speed of Light
- Anyone here look at Einsteins calculations?
- The Pinwheel Paradox
- General Relativity
- text on differential geometry
- Special relativity - please can someone clear this up?
- dark matter --- dark energy
- What is thing we call Space?
- Request for opinion
- speed of light
- 1-dimension
- Is a change in earth's surface gravity detectable?
- Time Dilation Question
- SR Question (Basic)
- space time
- definition of a clock in relativity theory
- Will Hawking or Penrose ever win Nobel Prize?
- Another SR question
- light orbiting BH
- I'm holding a pole and running at a relativistic velocity
- How fast is a relativistic velocity?
- Question "Length Contraction"
- Beginnings of GR...
- The oh my god particle
- The difference b/t free fall and outer space
- entropy of a black hole
- Time - Mobius Dimension?
- Sound at the Speed of Light?
- Matter <--> Energy converions
- Gravity and Gravitons
- Spacetime and Euclidean Geometry-Jacobson
- info on anti-gravity
- Matter Forms Space & Time is Relative Motion
- Practical Use For Length Contraction?
- Time Dilation & big bang Question
- Question about the metric tensor in Einstein's field equations.
- Distancing
- Time flow & Cosmic Background Radiation
- questions about tensors in GR
- speed of two spaceships
- Relativity Question: Two spaceships following each other near C
- Gravitation Speed/Acceleration/Velocity
- aging
- Event Horizon = Singularity?
- Infinitie tidal forces at event horizon?
- A doubt
- Co-ordinate transformation
- Time travel??
- Black Hole Paradox?
- Schwarzschild solution
- Into "the past"?: Tricky SpaceTime Diagrams?
- Explaining special relativity
- Paradox... SR:
- schwarzschild metric and BH mass
- speed of light
- Measuring the speed of light
- Stresses in a rotating object?
- Black Holes - help needed to settle a bet
- singularity of a black hole
- Question about expanding black holes
- Problems w/ Model of Gravity
- Last straw to form black hole
- The Meaning of Einstein's Equation..
- Simple Question on General Relativity
- 'Faster than light' question
- conservation of energy in GR and symmetry
- Escape velocity outside event horizon
- Reverse sequence of events
- Block Time interpretation
- Calculating mass and speed from kinetic energy and linear momentum
- change in relativistic momentum
- dark energy and pressure
- Special Relativity. timespace correlation.
- Evidence of length contraction
- frame dragging and rotation
- There is only one True Singularity and It is at the Center
- The End of the Universe from the Outside In - as free-faller nears singularity
- Tensor Mangling Software
- What do the light cones mean?
- E = mc^2: Identity or equality
- Gravity and acceleration
- time and acceleration
- Action at a distance
- Gravity, Gravity, Gravity...
- The black hole and the milk
- Question about how we look at space
- Wormholes
- gravitational lensing and its implications?
- Gravitational Time Dilation
- String-mass near the speed of light
- Frame of reference
- If Time and Space Are Relative Concepts, Then...
- Some Musings...
- Proof for E=mc^2....
- Some questions on GR
- what is a time-like killing vector?
- Time Before Time...
- Spaceship accelerating inside a Black Hole
- Telescopes moving very fast
- Falling object dispute
- Bending of Space and Time
- The presesnt
- Is length contraction relative or absolute??
- The sled and the hole
- Quantum blended with a little SR
- Is Special relativity quantizied?...
- Interpretation of GR
- Relativity questions
- Why c2 (speed of light squared)?
- A New Test of the Equivalence Principle?
- Einstein's Thought Experiment
- How small is a BIG-CRUNCH ?
- I'm stumped...
- Black Hole Inconsistencies
- Christoffel symbols in the Schwarzschild metric
- maxwell equations and special relativety
- Speeds and waves
- Fundamental postulates of SR
- Falling into a black hole
- Books in general relativity?
- Baby Universes in labs
- Michelson Morley and Paul Marmet
- Big bang and BH
- Am I thinking SR correctly?
- binary pulsars and general relativity
- Special Relativity in an (in)finite universe
- Hovering in gravity makes curved space flat?
- do tachyons exist or not?if so causality will be failed!!!
- speed of light
- Gravity Gyruss...
- Relativity for people who insist on having a "true physical time"
- The Mallett Time Machine
- Common Errors
- Relativistic Space Travel
- wrong claims?
- increasing mass, decreasing force?
- Big Bang, black holes,singularities
- The Peripatetic Albert, Round 3
- Mass to energy
- ENERGY to matter
- Nonsymmetric Gravitational Theory (NGT)
- Can we understand Einstein?
- Kinetic Enrgey according to another viewer
- why is there 0 gravity in space
- Does an electric charge "curve spacetime"?
- Contraction effects at relativistic velocities
- Whatever happened to testing relativity?
- Area of spherical circle
- Strange implications of NASA's Gravity Probe B
- The Soccer Ball Problem in Relativity
- Wikipedia's article on black holes
- einstein's warping of space-time as a theory of gravity
- A quickly oscillating mass produces a gravitationnal wave
- Check: explanation of tides
- Einstein - not flattering
- Space
- Question on the age of universe
- The Big Bang - acceleration
- Wormholes mean changes to Relativity?
- What causes space curves? Energy or rest mass?
- Relativity
- Special Relativity handling acceleration
- A preferred frame?
- Einstein's theory of Special Relativity
- Time dilation when travelling
- Speed of Light
- a question about mickelson& morli experiment
- SR Paradox
- Time Dilation Visualization
- changing the speed of light
- theory of relativity sets limits
- General Question about Einstein's Theories.
- Mass of a body
- special relativity and frames of reference
- Newton's bucket and Galilean relativity
- Relativity vs Newtonian Physics
- Time Travel. Is it possible?
- Can someone explain the twin paradox to me
- Why isn't freefall based on the mass of the object falling?
- Can you say MOTION?
- The Equivalence Principle--bending of light
- Metric compatibile connection
- Distance meaning
- Question's About the Speed of Light
- Energy---> space time curvature
- Foundation to the theory of relativity
- Experimental relativity
- The Twin Paradox
- Relativity of Simultaneity
- Alternate derivation of Lorentz Trans.
- Light, Mass, and Black hole question
- Gravity and massless particles?
- error in schwarzchild metric
- Gravity & General Relativity
- Einstein energy and thermodynamic energy
- Could someone please help me get my mind around this paradox
- Frame Dragging Detected per GR
- Time Dilation and Length Contraction
- Frame Dragging Confirmed?
- Light and Wave properties
- Four momentum: why four?
- Frame Draggin And Grav Waves
- Yet another "spaceship moving at .9c" thread
- Information "Twin", loss Paradox?
- Relativistic Velocity
- 'Speed of Light' Thought Experiment
- What is Einstein Temperature and how can i use it in this question?
- Relativistic Potential Energy
- What constitutes an observer?
- Electric Field 4-vector
- experiments
- Important find:when is the light wave-motion ?and when is particle-motion?
- Time "speeding up"?
- Very simple question
- Lorentz transformations
- space-time and the speed of light
- A Stationary Universe?
- The Cosmological Twin Paradox
- time problem
- Spacetime is warped
- Relativity questions...
- Relativity and Clocks on Airplanes Calibrated from the Ground
- Of pancakes and particles
- General relativity - linear from nonlinear solutions
- Does time essentially stop if you could travel a C?
- Discrete Relativity?
- mahematics for general relativiy??
- Spacecraft
- Parallel universes.
- Paradoxes!
- static spacetimes
- Event horizon and singularity
- Far Gravitational field of a moving mass
- The Smallest blackhole possible?
- Speed of light?
- The Minkowski so-called 'metric'
- Source of photon propagation
- outer product of two one forms.
- GR Acceleration
- Black holes and Hawking radiation
- Centrifugal force from GR perspective
- Problem On Relativity
- Interferometer Question
- Embarassingly simple question - Christoffel symbols
- Terrestrial phenomena significantly influenced by GR?
- Time flow.
- Can photons accelerate?
- Relativity and the "Dark Energy" question
- Meaning of "age of universe"
- 4-vector norm names
- Refusal to give up absolute
- Macroscopic vs. microscopic
- The mass of the photon
- Potential/Potential Energy
- Interesting questions on relativity
- Black Holes
- Special relativity and Universe expansion.
- Circularly symmetric star
- Information transmission
- The whole racing with light thingy.
- Why do photons naturally travel at c?
- Space curvature allows time travel to the past!
- What are your favorite web pages on SR?
- one spherical mass inside another
- Atmospheric Speed of Photons
- RTT’s mind boggling Time Dilation Paradox
- Special and General relativity
- GR metric meaning
- Special Relativity for the School Going Child
- Big Bang and GR
- Information speed limit
- Gravitomagnetism and GR
- quadrupole moment and wave generation
- Global Positioning System and Relativity
- Time is not the 4th dimension
- Scalar, Invariant, Observer depdanat
- Relativity question
- Learning Relativity
- Defined quantities
- What is Space?
- Does a single photon have 'color'
- Twin Paradox
- 1st postulate of Special Relativity
- Direction of space curvature
- Beginners Virtual Dilation
- Faster Than C?
- Why can photons travel faster than c?
- Causality & Hyperspace
- Regarding Special Relativity
- Speed of Gravity Controversy
- unaccounted mass
- Einstein´s work ion Unified Field Theory
- technical paper on Lense-Thirring Lageos measurement
- Many Worlds Interpretation of SR
- how objects look at high speeds
- flat potentials and mass
- Why arent Plancks constant's relative?
- Beyond c if time goes positive does V decrease?
- Laws of physics in four-vector form. A question.
- Gravitation from the Ground Up - B.F. Schutz
- T Padmanabhan-new paper
- Faster than the Speed of Light
- Scientific alternative to the anthropic principle
- Does my spaceship accelerate forever?
- What is the resolution of the The Bug-Rivet Paradox paradox in special relativity?
- Teaching vs doing
- Kaluza's paper to Einstein
- Is universal "time" the 4th or 5th Dimension?
- Infinite Time and Hawking Radiation
- Changing the speed of light does nothing?
- Q theory, Relativistic Mass and Einstein
- Is Gravity an Attractive Force?
- gre problem
- just how far away is that star?
- Potential energy question
- time dilation in an electromagnetic potential
- Time Travel
- A question of universal expandsion
- what is the problem with GR and quantum
- SR time dilation problem
- Time
- SR quiz!
- Riemann curvature tensor derivation
- Does mass increase in SR mean higher gravity in GR?
- If you travel faster than the speed of light, do you open up a black hole?
- magnetic field
- Gravity Equasion?????
- When does a charge radiate?
- Special Relativity Question
- GR and the higgs field
- Proving relativistic blueshift with Lorentz transforms only
- Twins/triplets again, but *truly* symmetric
- Aether theories which are experimentally indistinguishable from SR.
- A interesting problem in relativity!
- Ph. D. in Mathematics or Physics (Relativity)
- Visualisation of relativity
- Could it be...
- Question on feasibility of relativistic travel
- How do you calculate time dilation in a gravitational field
- Escape velocity
- Geometric field / Thirring Lense / Red shift
- A question about SR...
- geodesics
- GR curved space KE and stuff
- Chain snap at high speed.
- A problem in special relativity with a surprising result
- Lorentz Transformation --- Exponential factor, why not Proportional?
- Is gravitation faster than light?
- What would happen???
- Electro magnetism gravity
- Probably an old question
- SR question
- the gravition and einstein's equivalence principal
- Note the comment on SR herein:
- An illustration of relativity with rulers and clocks
- Special Relativity vs Alternatives
- Relative positions in time - How does SRT define them.
- Mond
- FTL travel in a light cone???
- Discover Article something not quite right.
- A question about movement in 4D
- graviton and the equivalence principle
- Spacetime wave orbits black hole
- Can someone explain Einstein's relativity theory?
- H Ziegler - Does any one have any info on him?
- Light Waves
- Parallel amazment.
- Help with special relativity
- Backward or forward in time?
- distance on a 2-sphere
- Geometry and E&M
- Barwacz Space
- Lawden's Book
- Could a GR expert look at this?
- Speed of Light..
- What I tell laymen who ask me about SR
- Energy of a particle
- Generalized Lorentz Transformation for an Accelerated Frame of Reference
- Conversion of mass to energy
- length contraction and muons
- Does SR imply determinism
- confused about black holes and acceleration
- Update on this guy. Anyone?
- Einstein's letter to Lincoln Barnett
- E=mc^2
- time dilation
- massive objects going 99.9% speed of light.
- Confusion about Spacetime
- Reality and Relativity
- Quick question for a confused English major...
- The first failure of relativity????
- A Special Relativity Question
- Gravity waves
- hell all plz help me life or death situation
- Stationary Einstein-Vlasov system
- A Derivation of Special Relativity without Invoking Group Theory
- Journal articles on mass
- Sectional curvature in GR
- How to get started?
- Experimental Evidence for GR
- The Sun revolves around the Earth?
- Has anyone heard any more about this guy
- [B]the twins paradox[/B]
- How accurate is world time?
- Lorentz transformations
- Tensor practices
- Gamma factor equation
- possible solution for dark energy
- How to retrieve the lenght-contraction from the LT?
- Question About Relativistic Acceleration
- Relativistic effects in non-vacuous media
- Einstein's Relativity Ppr almost not Published
- Hafele-Keating Experiment
- Simple SR question
- Harmless Lorentz transformation question
- General Relativity and Theory of Spinors
- Hamilton-Jacobi equation for Gr...
- Unification of GR and classical E&M
- Time going in reverse
- Question from I. KINEMATICAL PART § 1. Definition of Simultaneity
- Derivation of relativistic energy
- Ether Drag theory
- Fizeau, 1851, drag coefficinet
- force to resist expansion
- Plank and the bullet?
- Help with a little "Gedanken" experiment please?
- Relativity and temperature question
- E˛ = p˛c˛ + (mc˛)˛
- Relativistic mass question
- Photon mass
- Black Holes in the Very Early Universe
- Derivation of the momentum-energy relation
- General Theory Of Relativity
- New to Relativity:Need Answers!!
- Is only GR enough for proved the event horizon
- Relativistic Mass
- Relativistic and rest mass
- What do you see at light speed?
- a little problem in general relativity;momentum
- Special Relativity - Transformations and Equivalence Principle
- Universe and twin paradox
- lever paradox
- What is the Limits of Lorentz Transformation when (v/c->1)?.
- GR: Black Hole - Electrical Charge
- Einstein Conference
- space-time curvature
- dunno theorey of relativity
- Math Question
- Relativity
- Constancy of c
- Does light bending doubly violate the equivalence principle?
- Derivation of Lorentz Transformations
- Second Postulate of Special Relativity
- light speed
- Centre of mass of Universe
- Running at light speed
- twins paradox need clarification
- Negative mass
- Invariants in general relativity...
- tensor gradient and maxwell's equation
- 4-vector
- What is gravity and what implications does it have for the future of the universe
- Reverse engineering relativity?
- Conservation Principle Related to Expanding Space?
- e=mc^2, backwords
- lorentz transformations explanation?
- gravity & photons
- About the assumption and need for 4 dimensions and more
- fleeing earth at the speed of light
- Relativity Paradox
- Light in opposite directions
- Time travel and cosmic strings
- Coupling of the graviton
- An exercise in eloquence: Basic GTR
- Question about GR - movement in space-time
- GR to the center of the Earth!
- Does relativistic mass create gravity?
- 4-velocity
- just wondering
- A very simple question about general relativity
- Could Time be speeding up?
- I know how to travel faster than light :\
- An odd sort of symmetry about E=MC^2
- Does anybody have a better analogy of describing space-time curvature?
- Mach's Principle
- GR and Time Travel Paradoxes
- Who does time really slow down for?
- A simple SR problem
- Heliocentrism from a relativistic standpoint...
- Relativity situation. Questions.
- Time difference - camera's
- Textbooks?
- Good online report about wormholes?
- SR and Time dilation problem
- Twin Paradox
- On photons in perpendicular directions
- Bibliography: Twin Paradox
- Shortest Paths
- silly questions
- Does time really slow down?
- Universal Time Dilation?
- photons and black holes
- A question for firt post.
- Absolute motion, is it detectable?
- c?
- Maybe its an old question
- special relativity
- special relativity- time expansion
- energy conservation in General relativity
- Temperature and relativity
- Can an Event be in one frame and not be in another?
- Falling into a black hole
- Does time expand?
- Laws of time and space
- Limit as the Speed of Light becomes Infinite
- Light
- Charged particle moving relativistically through E field
- Photon Energy when Doppler Shifted!
- Inhomogeneous and anisotropic dust models
- Degenrate answers
- A wrong statement regarding SR.
- Temperature and observer velocity
- What is time dilation?
- Electron in G orbit
- Does the equivalence principle hold for charged particles?
- Really?
- Viewing the Big Bang?
- Geometry vs. Particles
- A spinning Universe?
- Faster Than Light?
- Spacetime intervals again - still figuring out the formula
- Time dilation in a centrifuge
- Schwarzschild metric
- Computing Trajectory Profiles
- components and basis transform differently
- Testing a Theory of Gravity
- Space like time like light like separations?
- Twin paradox
- So confused: Tensors and reletivistic cosmology
- Gravity and the scale of matter.
- General relativity mathematics : physically acceptable ?
- Age of the universe -- absolute or relative?
- Equivalence without relativity
- Are SR & GR Considered Experimentally Proven?
- Black Hole XVI
- The energy-momentum tensor and the equivalence principle
- objects turning into a black hole near the speed of light?
- Time Travel
- Big bang related questions
- Black hole riddle
- Gravity?
- relativistic electrons
- Information needed on two wheels and chain apparent paradox in SR
- Evidence for preferred frames?
- Relativistic velocity in the time dimension
- curving space - it is the Higgs?
- Length contraction and time dilation
- Finding the contraction formula using proper time
- Space and time dilation
- curvatures in spacetime explained by momentum?
- gravity
- Question about Proper Time and Rest Frame selection.
- Einstein's theory of gravity
- White hole
- Masses interaction.
- question
- faster than light
- does increased velocity increase gravity?
- Pulsing from a ->c satellite
- Derivation of Christoffel symbol
- Oddity of Time
- extra dimensions
- relativistic mass and energy
- Where can I find PDF "Black holes White Dwars and Neutron Stars"
- Urgent Help required- schwarzschild solution
- Approaching a Black Hole
- speed of light?
- Gravity and light
- Relativity and free energy
- On Forming of Black Hole
- stable worm holes
- What programs are most successfull for visualization physical processess?
- Time dilation and radioactive decay
- How to imagine distorted space
- Light Beam Problem
- Spinning wheel and light speed
- space-time
- General Coordinate Transformations
- help on relativity
- particles approching the speed of light
- E=mc^2
- Event Horizon
- Derivation of E=mC2
- Question about time
- ADM Approach
- Speeding into a supersize black hole
- twin paradox
- Question regarding the expanding universe
- Faster than light communication...
- Electromagnetic 4-vectors
- Hubble distance
- So Long..and Thanks for all those Fish!
- E = MC2 - how was it initially proven?
- Time speeding up?
- Tramplines and Scales and Free Float
- Is a free ballistic path a parabola or a cycloid?
- Length Contraction question.
- Interesting Question About Relativity and the Absolute
- Shape of Time
- Einstein's 1905 papers
- Horizon
- Radar gun and STR
- Event horizons and Hawking radiation
- A really really long rod
- Curved Space-Time question.
- Humans have true 4D spatial vision
- Question about the equivalence principle
- GR & The Cosmological Constant
- Dual Tensor and Field Tensor
- GR vs. SR while accelerating away
- On ether
- twin paradox
- General Doubts about Space Time
- Einsteins though experiment and e=mc^2
- Boyer-linquist Coordinates
- Does anyone know some light facts on the following topic?
- relativistic energy
- Pressure and refraction in GR?
- Seeming Paradox
- GR layman's question
- sure this is easy for you but I dont understand...
- infinite accelerations???
- Relativistic mass, how did Einstein thought of it?
- Running real fast while holding a mirror
- Proper Length and Photons
- Special Relativity vs. General Relativity
- electricfield in gravitationalfield
- [SOLVED] Speed of Light always remains constant ? think again.
- Lorenz formulas
- What if time was round like a circle?
- The concept of spacetime
- Relativity Quiz
- Artificial gravity
- MMx for GR
- I am going to do a presentation on time-travel tomorrow.
- How would you explain the Special Theory of Relativity using Physics?
- classical general relitivity
- Travelling at the speed of light
- Light In A Medium
- Is spacetime a physical thing
- Help with time and speed of motion please.
- General Relativity in the Undergraduate Physics Curriculum
- graviton and general relativity
- A new look at spacetime
- help with GR
- questions about energy conditions
- Lorentz force in two frames
- strength of materials and special relativity
- View of Gravity?
- Lorentz transformations...
- question pertaining measurement and space
- Two questions
- Ricci components in Schwarzschild solution
- question re singularity
- Relative Detectors
- Black Hole Orbits Animation
- Basic GR math question about dimensions
- whose frame is "right"?
- Center of Black Hole
- Can virtual produce anti-gravity?
- Does Magnetism Curve Space and Time
- Schwarzschild metric assistance
- kind of peculiar
- Another Artificial Gravity Question
- Speed of Light, Squared
- A simple relativity question
- Gravitomagnetism
- Einstein's:Mass increase resulting from Acceleration increase
- Happy Birthday, Special Relativity
- frames
- Black hole creation (Penrose diagrams)
- Blackhole question
- the effect of wormholes on photons
- a question about relativity model
- Inverse Lorentz Function...
- Generalization of SR
- Please help!
- c constant to the observer as well?
- Fermi-Walker transport
- Booksearch
- Energy of motion at high speed
- understanding of relativity
- Absolute Velocity of the Earth?
- Why did Einstein define speed of light as a constant and time as a variable?
- lorentz invariant
- Can "spacetime as a rubber sheet" be taken literally or merely as pedagogic?
- Why does light accelerates after being slowed down
- gravitational redshift +blackbody spectrum
- Relativity in rotating frames
- general relativity
- Escaping light
- gravitation... what do we know
- What convervation law is required by the Lorentz Transformations
- Proofing a few paragraphs on relativity
- logic failure
- Accomodating relativity to dark matter
- GR postulates
- Relativity - facing backwards on a train
- why light travels
- What's in your differential geometry toolbox?
- Time machines and rotating cylinders
- tidal distortion
- Rotating coordinates, again
- [SOLVED] What?
- "Gravity doughnut" may solve time travel problem
- Fermi normal coordinates
- Speed
- 2 Questions
- Question about Wave equation for light in nonflat spaces
- An old new kind of observer dependency: is v > c possible if nobody was looking?
- The Nature of Gravity
- Special Relativity and Mass Variation
- Prove rectilinear motinon
- Time deviation
- On the Relativity of Lengths and Times
- Angular momentum at near-c velocities
- Euclidean Quantum Gravity
- Noether's theorem and Time invariance?
- Calling pmb_phy
- Simultaneity Question
- Relativistic Mass
- Relativity in question
- Fermi-Walker transport - problem with a minus sign!
- Speeding lab experiment
- Special Relativity Knowledge Challenge (for experts only)
- New Paper: GR implies no dark matter
- relativity and gravitons?
- Energy in a volume changing the geometry
- travelling twins
- lorentz transformations
- definition of simultaneity and on the relativity of lengths and times by a. einstein
- The Speed Of Light
- definition of time
- on the relativity of lengths
- Twin paradox, live via satellite!
- concerning the platform and the carriage in uniform translatory motion
- Observation
- blackhole decay and gravitational wave
- gravitons have gravity?
- Stupid question
- a question
- Gravity Probe B
- What's the reason?
- Linear Vs Sagnac
- General relativity~
- Everything moving at c
- Minkowski's geometric
- Faster Than Light Communication/Transportation Not Possible?
- GR and EM
- Minkowski spacetime interval's Lorentz invariance
- Twin Paradox and the Big Bang
- speed & gravity
- Why Minkowski spacetime and not Euclidean spacetime?
- How do you explain the "twin paradox" to a friend
- How do you explain the "twin paradox" to a friend
- The difference between felt, and unfelt motion.
- General Relativity And Quantum Mechanics
- Experiences of particles moving at relativistic speeds in non-vacuum
- Escaping Black Holes
- Space and Time
- How to calculate speed of gravity in GR?
- Lorentz Contraction of a Rotating Object
- The attraction of light by gravity
- J Baez' "The meaning of Einstein's Equations"
- Absolute vs. Relative
- The gravity of light
- Pls HElp.. Time? Elastic?
- Warping through time...
- Time Barrier?
- Fizeau's experiment
- Some conceptual questions on SR
- How true is this...?
- Idea of increased mass at relativistic speeds
- Relation
- Square speed of light!
- Does STR need modifying?
- Beginner Help on Minkowski Space (and others)
- Gravity wave question
- energy-momentum tesor
- rest energy question
- Gravity shock wave....
- New concepts?
- What the heck?
- E = mc^2 is Not Einstein's Discovery?
- Question from Rindler's Introduction to Special Relativity
- Speed of light
- Another Hairbrained FTL Scheme
- Speed Of Light and stimilation
- Can the speed of light be considered an absolute?
- Einstein's Derivation, why is light velocity c-v and c+v?
- Langevin Twins Paradox
- Langevin Twins Paradox Proof
- relativity
- time in the Lorentz transformation
- relativistic length contraction
- relativistic energy and matter
- A better way to imagine the time space continuum.
- Light Bending Effect
- Creating Gravity Waves
- So two ships leave earth in opposite directions
- beyond "c" what happens?!
- Tidal forces/fields
- relativistic addition question
- Twins Paradox question
- Time in different dimension
- Speed of light exceeded
- Through what medium does EM propagate in "empty" space?
- Gravitational Redshift
- Relativistic Mechanics
- The nature of space, time and spacetime
- the sweep rate of the tail
- help. not sure how to criticize the following site:
- Einstein's Clock Synchronization Convention
- how is relativity theory applied to gps?
- 1st & 2nd Postulates
- the speed of light in a vacuum....
- physics, abstract....
- confused about fourth spatial dimension
- Random questions + Geometric multidimensional patterns.
- what is relativy ???
- Einstein cross
- Challenging Einstein?
- Would it be possible to see into the past..
- What evidences of relativity do you find the most compelling
- What happens when...
- four-vectors, Minkowsky spacetime.
- Relativistic contraction happens which way?
- Original Papers
- Photon's mass is zero?
- Thoughts on Einstein’s Theories
- Gravitational field of a moving object
- A question about the existance of a thread
- Gravity Probe B
- Energy in special relativity
- Relativity and a mirror
- hypothetical; what would a rocket look like to an outside observor if...
- Stress-Energy Tensor from Lagrangian: Technical Question
- consistency of the speed of light
- Shear stress energy tensor in GR
- Question about Einstein's train and lightning
- Is cheating going on in Relativity?
- Geometric derivation of SR?
- Lorentz contraction in Special Relativity
- Please help with Corrections
- GRTensorJ - Books (physics/0509108)
- Time travel is posibble or not ?
- lens
- 2Q in L-transformation
- advanced books/papers on derivation of Newtonian mechanics from GR
- I want a formula
- Curvature of light and its effect on reality
- Accelerated charges loose energy
- Antisymmetric 4-tensor
- I got a question.
- Contravaint and covariant
- is gravity just the temporal gradients effect
- Sir Hermann Bondi (1919 - 2005)
- A Supposed alternative to GR I feel to be Nonsense..Clarification please
- why is gravity assumed to be a wave
- relativistic rocket equation
- coordinate transformations and acceleration
- do gravity waves get bent by gravity?
- 4-velocity vector!
- Rank of tensor
- The ultimate physical paradox: infinite from infinitesimal cosmos
- 2 Black Holes
- The Big Bang
- Can anyone explain this?
- Relativity without the aether: pseudoscience?
- Hawking, new theory on information paradox right or qwrong?
- The effect of curved spacetime on Feynman diagrams
- Curtailed length and the twin paradox
- Should the Special Relativity Principle be Reduced to a Tautology?
- Weak field relativity - with future applications to the moving mass discussion
- Twin Paradox
- The Black Hole in a Spatially Compact Spacetime
- Question from Schutz, A First Course in GR
- Einstein And A Century Of Time
- Time Dialation Question
- Randall Sundrum model...
- Time Dilation and Differential Aging
- Question on Phenomenology of Einsteins Field Equations
- Does homogeneity infer isotropism?
- speed of light
- Relativity and Energy Transfer via Radiation
- Advice on GR book specific to my needs...
- dual to tensor
- Time dilation
- kinetic energy
- The distance-dependent nature behind lorentz "time-transformation"...
- Half the spped of light
- Another question from Schutz
- supplie's paradox
- Lorentz transform as a complex function
- Proof of Einstein-Hilbert action and Surface term
- Folding space
- how to deal with the index in Einstein summation?
- length contraction
- Stephen Hawking book report
- Relativity Problem?
- Energy and reference frames
- Bending Light= Gravity
- Ricci Decomposition
- Question on Weak Energy Condition
- 3 Sphere in GR
- Energy of a photon in different frames.
- pastpaper on GR
- Gravity Probe-B Completes Mission
- pp waves - Null dust solutions...
- Wave of Death
- General Relativity and Quantum Cosmology
- Overturning GR contest
- Relativity...
- Stephen Hawking and time travel
- Schutz, page 224
- Schutz, page 226 - Black hole formation
- faster than the speed of light
- unification of space and matter
- Why is the speed of light what it is?
- Question posed in a science magazine
- Another Speed Of Light Travel Scenario
- Pirelli relativity award
- Elementary Units
- Simple Relativity Question
- Schutz, page 226 again
- Geometry and the Universe - A symposium on GR
- Characteristic Polynomial in Einsteins Equations
- Is this correct
- blackhole mass
- Coriolis Question
- Acceleration in Special Relativity
- Energy-momentum Four-vectors
- Simple questions on relativity
- Schutz, page 115
- Ze Optical Boom
- Old Book Review - "Classical Charged Particles"
- In the absence of light...
- Blackhole's Effect on Time
- Origin of 4-momentum - Hisorical Ref.
- Accelerating Gravity
- the fabric of space time
- Speed of light?
- From space time to gravity
- STR, one-way speed of light and conventionality
- Light-experiment
- Muon Centrifuge question
- Schutz, page 246
- Superluminal
- Black Hole Riddle 3
- twice the speed of light?
- 4D spacetime Light cone Twins paradox
- Photon mass?
- Light and time
- EFEs in context
- Kinetic Time Energy
- Question about rotating frames
- Simplest question to articulate concepts in General Relativity
- question concerning thermodynamics and special relativity
- Gravity waves
- A paradox for you
- Constancy of Speed of light
- The light year long wall
- gravity probe B
- Pushing a Pole?
- Paralel universe and Warping of Space Questions
- Length Contraction
- simultaneity
- relativity potentials
- Conservation of Energy?
- how does it work?
- hyperbolic spacetime
- Black Hole Engine
- time dilation and infinite speed
- 2 Metric tensor question~
- Why do we judge time by light?
- get a metric
- Could any curved space be a cut in a higher-dimensional flat space ?
- is momentum conserved in all inertial frames?
- Shortening of objects
- Kinetic energy of an object
- Plank units
- orbits
- Gravitomagnetism
- New Bee question on Gauss Coordinates systems
- Age of Photons
- Is reverse time dilation posssible?
- Is "c" the fastest known velocity?
- Wormholes and energy conservation
- Relativistic Mass Density
- Twins paradox and ageing
- is time in the universe constant?
- e = mc2..... behaviour of m?????
- A hand-waving question
- Is mass dependent on the observer?
- Lorentz' "ether"
- When the station comes to the train?
- Light Fluctuations
- High speeds - becoming a black hole
- Mach's principle and variable speed of light.
- Speed of light again
- Energy "Triangle"
- Lorentz Transformation
- Time is relative
- Einstein said: NO Absolute Rest
- How far back in time can we see?
- New paper ..
- Why of all things LIGHT?
- taking the plunge
- Speed of light limit->delay
- Simple gravity puzzle
- GR aether
- more light questions
- Length contraction & light
- e/m ratio?
- Time Dilation Questions
- Gravity In 4D Physics?
- Special Relativity-Texts
- How do we know Gravity Moves the Speed of Light?
- Speed of Light Exceeded
- Maximum Gravity
- Active Gravitational Mass in GR
- Relativistic physics of space?
- Question about Energy
- Can a black hole form using only photons - in theory?
- Natural Warping
- Why is Relativity still a theory?
- Question on Addition of Velocities
- Objections to Relativistic mass
- EM+GR equiv. 5D?
- gravity over a distance
- High speed collisions
- Relativty & thermodynamics
- Help Understanding MME
- Contradictions in relativity?
- day/night time dialation
- Tensors and GR
- General relativity question
- Jackiw-Teitelboim gravity in 2D
- Relative motion
- sun bending light
- Basic concept in special relativity
- GR time dilation
- The Flow Of Time
- Which one grows old?
- Time dilation and space contriction doubts
- Question about photons
- E=mc^2 in gravitational fields
- Black Hole Paradox
- Yet more Black Hole questions
- Functional independence and energy
- Event Horizon
- Light Postulate Applicability
- GR, time-like energy, and photon-path bending?
- Einstein's space elevator and the twins paradox
- black hole question: apparent rate of growth as seen by external observers
- Lorentz contraction inverse trouble
- Relativity????
- Coordinates
- What is the "ontology" of general relativity ?
- News: An ECHO of Black Holes
- Did Einstein like the term "Relativity"?
- Kaluza-Klein theory
- 2 different cosmological constants
- Relativity - a new viewpoint!!
- Photons at less than speed of light?
- Twin paradox? HA! I'm an only child.
- Big Spinning Ball Question (Confused)
- What is wrong with my thinking?
- speed of light in different frames
- Speed of light in media other than vacuum
- What's wrong with this thinking?
- From Lights Point of Reference Is It Traveling Infinetly Fast?
- Einstein
- Horizons question
- curved space/ spacetime
- Black Hole
- local lorentz
- The Foundations of Relativity
- Possible method to escape a black hole?
- Gravity Causing Gravity
- Length contraction
- Venus during the day, a test of relativity?
- Speed Trouble
- Length under Acceleration
- Santa Claus at Nearly the Speed of Light
- Paper - "On the concept of mass in relativity"
- Is arithmetic still true in a gravitational field
- A feasible experiment that can decide!
- Why does mass increase?
- Is it Possible For A Particle To Stay Completely Still in Space-Time?
- Accuracy of Relativity
- Can red shift compare which clock go faster?
- What can an observer see during his travel into BH?
- inertial frames
- i have a question
- Gravity-Time
- Rotations in Special Relativity
- Length contraction paradox?
- Math vs Meaning
- Back reaction
- 4D warping
- Simultaneity Confusion
- Teleportation-possible or not?
- wormhole
- Time Dilation Question
- Holographic principle
- The Twins Paradox in curved spacetime
- Neutroscopic methods in General Relativity
- Asking a simple question about twins paradox
- Relativity : the Special and General Theory
- problem
- relativity is broken!
- What is a bifurcation surface and a binormal vector?
- speed of light
- The Triplet Paradox?
- Distorted, structure (3D) vs warped, fabric (2D)
- The Reality of Relativity
- Schwarzschild Metric with multiple masses
- My Black Hole Theory
- The Foundations of Relativity II
- Length contraction
- Bullet Paradox
- time variation in the event horizon
- Question about black holes
- This is probably just a coincidence, but...
- relativistic velocities of uncharged particles
- Relativity of cosmological curvature
- Relativity and The Big Bang.
- Which observer is correct?
- increase in mass & decrease in volume?
- Ricci scalar
- Negative Energy and a SciFi ftl
- Does general relativity predict expansion?
- Infinity Singularities
- Experiment verifies E = mc^2
- relativistic momentum
- Time Travel
- Albert Einstein's theory of special relativity.
- Does a wristwatch measure imaginary time?
- Vacuum with cosmological constant
- "fields" and relativity - a broad question
- Relativistic apple
- Photon's Perspective of Time
- time relations
- Komar mass simplificiation
- equivalence or equal?
- imaginary mass
- Relativistic velocity
- Faster than the speed of Light ?
- light
- Can a piece of matter be compressed to infinite density? Is there an atomic limit?
- Is all curvature the same?
- time dilation
- Newtonian limit
- Concerns about ontological interpetations of Theory of Relativity
- Surpassing the speed of light.
- Gravity/acceleration equivalent?
- Extreme redshifting
- GR, SR and the Sagnac effect question
- First experimental verification of GR
- Pls explain
- Why is space-time 3+1 dimensional?
- Don't get this....
- question on speed(of light that is)
- space & "older"
- Faster than light communication and signals moving backwards in time
- if C cannot be achieved, then how can light achieve C?
- Information Propogation
- The LightCone in the "3D"
- momentum and penetration depth
- Speed of light
- Different speeds of light w/ Planck Units
- not able to fully understand what im reading..
- Schwarzchild and Reissner-Nordstrom singularities
- Are there contradictions with Special relativity in the expansion of the Universe?
- How does time stop at C?
- A variation on the twin paradox
- Relativator
- Simple question about bend light
- Is lambda a true force?
- rotations in special relativity
- SubAtomic Particles --> Time Travel
- photons in the derivation of relativistic equations
- The pace of time
- Co-accelerating spaceships (Bell's Spaceship Paradox), how does this occur in SR?
- red shift occurs when gravity is at 90*
- How do Orbits behave as orbital velocities become significantly relatavistic
- A messy unsolved problem
- Antigravity like soluctions of Einstein equations
- Traveling to Alpha Centauri
- There is no really good definition of mass?
- Infinity in Finite Proper Time
- Magnetism & Relativity
- Space Time
- Is the speed of light measurement dependent on local clocks?
- Stress-Energy Tensor
- The twin Paradox
- is this possible
- isotropic and anisotropic propagation of light
- Re: time-space... Why the paradoxes of time? (CONFUSED)
- Why "C" in E=MC^2
- Space travel again :)
- Some questions on tensors
- relativistic dynamics
- Sample Chapters of "Gravitation and Inertia"
- A case against Relativity
- Gravity & geodesics
- c+c=c
- Kinetic energy in SR.
- Inside looking out
- space-time geometry
- how can Einstein?
- curvature on the earth??????????
- clarification
- Light's limitations
- if 2 spaceships travel at the speed of light
- Lorentz- and Galileian-transformation
- Detecting space time
- teaching special relativity
- Timelike vectors
- How to visualize E-MC2
- Circular twin paradox
- Michelson Morley riff raff
- Rigorous derivation...
- Photon passing through a black hole?
- if SR were wrong
- Theory of Relativity
- Defining SR and GR?
- Potential energy and GR, something doesn't add up
- gravity distortions
- Questions about the speed of light...
- Bending of Light around a Star
- aetherists and the doppler effect
- possible origin of E=mcc?
- Question about cause of curvature of spacetime
- does this make any sense?
- units?
- Questions on Spacetime Curve/Gravity
- Time and Space dilation and contraction
- Time difference: light emitted vs observed
- charge dilation?
- Can space travel fast than C?
- Space expands faster than C?
- Can two galaxies receded from one another faster than C?
- specific heat and special relativity
- GR and the 3rd law
- E=mc^2
- Topology of de Sitter and black hole
- the curvature cause by gravity implies absolute space?
- Relativity of time
- What about this Final Theory thing??
- Expanding Space and Starlight
- Geodesics in schwarzschild solution
- Perspective of Massless objects
- weight of a hot body
- Kerr Metric
- Gravitational Waves
- New test for GR ?
- Electron in a gravitational field XIV
- A Flaw of General Relativity?
- appearing faster than light?
- Proving Invariance of Spacetime Interval
- How does a body escape its gravitational field?
- two quick questions
- Inertial Frames distinguished by proper times
- SR, illusion or reality
- Black hole merger movie
- derieving relativistic electrodynamics equations
- Some under-used tests of SR?
- who's going to age more?
- Palatini Formalism generalizes GR to include degenerate metric?
- photon mass
- Relative speeds reaching c??
- Mach's Principle
- The speed of gravity?
- LaTeX rendering in the S&GR forum...
- How can magnetic field be a relativistic phenomenon??
- why is light's speed the fastest speed?
- Photons
- "mass" of a sphere of light - how pressure causes gravity
- Final Theory Orbital Question
- Relativity in Ender's Game
- Conclusion of the "consistency (!) of speed of light"
- Two speed of light experiments at different altitudes
- Why only for gravity?
- Time Travel?
- Can objects"catch up" with their own photons?
- photon speed
- Anisotropy of the speed of light?
- Question about Hawking radiation
- Slowing time on a plane
- Man Running on a train
- About the geometry of general relativity
- Do objects actually shrink?
- Problem with killing vectors
- bondi k calculus :why the k?
- lightspeed:does the definition of time make it constant?
- How to show something transforms as a covector?
- What is the exact definition of mass?
- illusionary time
- speed of light
- here's the way to go faster than light
- why can't we achieve c
- Is Time Travel Impossible?
- Energy, momentum, & mass of a box of moving particles
- Relativistic Lagrangian of a Free Particle
- The Twin Paradox
- Questions about time.
- If Time Is The Fourth Dimension
- mass
- Black hole orbital period
- Tensor Equation
- mass of a photon
- when the photon is born on the horizon.....bang?
- Quick question about light
- Charged black hole
- The Light barrier
- k and homogenity of time
- Census on terminology
- accelerated motion
- conservation laws and relativistic dynamics
- relativity-variation-fluid
- Tortoise Coordinate
- Thermodynamic exercise in GR
- An apparent speed paradox
- curvature without tidal forces
- Orbiting black holes?
- can SR be derived from other postulates than the constancy of c
- Can gravity refract?
- Black holes and the "Big Bang"
- Curiosity
- Hyperspheres...again?
- Time Travel...
- relativistic momentum definition
- Confused about General Theory
- A quick question on the twin paradox (quick I promise!)
- Gravitational radiation
- What is the D'Alembert operator
- Light without mass
- mass in relativity
- Just a question
- about black holes creation
- Acceleration in Black Holes
- Hypothetical Question. Creating Gravity and power supplies
- Photon and electron racing show
- General Relativity
- Measuring gravitational waves
- Question on Spatial Curvature
- See-saw problem in special relativity
- Penrose Diagram for Schwarzschild
- A falling object
- What is the dimension of the spacetime interval?
- measuring relativistic energy
- Ellis on an "evolving block universe" (gr-qc/0605049)
- Faster than light
- Attempting to Understand Alcubierre
- Basic metric diagonalization questions
- Interaction Energy how does it transform between inertial frames?
- A to B, faster then c.
- Backward traveling light.
- Why is a wire with a current not charged?
- photon and gravity
- Accelerating Observer
- altered space
- What,s the "energy" of the gravitational field?..
- Conceptualizing higher dimensions...
- Questions about light
- A question
- Theoretical experiment on relativity
- Interesting....
- light
- why Riemann tensor?...
- Why Do You Travel Into The Future As You Approach The Speed Of Light?
- the interactions
- Simultaneity
- Flowing time velocity
- Thermodynamic - conservation of energy/mass problem, I can't figure it out
- Composition of Lorentz Transformations
- The "hole argument" and diffeomorphism invariance
- light speed
- younger at the equator?
- Gamma rays faster?
- The interaction between two electriferous particles
- Another Twins Paradox question
- Slow-motion approach..
- Time as a dimension
- Secientist to test the 4th dimison
- Why don't all massive objects collide?
- Questions about Time Dilation
- SR Simultaneity Question
- Gravity - Integrating General Relativity with "Gravitons"
- Solving for spacetime
- Artificial Black Holes, again...
- Advertising very bad sites on relativity
- Light and Mass
- Gravity in the expanding universe.
- Gravity And Straight Lines
- Special Relativity Question
- time and space the same?
- Eddington Finkelstein Coordinates + Black Holes
- Speed of light and Relativity
- Light speed
- proper physical quantity
- Is time slowing down?
- Light Cones in Black Holes
- World's Fastest DerivationS of the Lorentz Transformation?
- Does light travel at different speeds?
- einstein energy versus thermodynamic energy
- Relativistic Rocket Question
- Can I see warped spacetime?
- energy and gravity
- What causes gravity???
- Relative distance
- Question about this equation
- Photo Doppler Problem
- how to travel faster than light - why wont this work?
- Avsolute Zero Velocity
- A question about the rationale of SR?
- relativity equation?
- More IR Frame confusion.
- Self Gravitating General Solutions to GR
- Black holes and scientific fraud
- Relativistic Thermodynamics
- time dilation
- How would you prove that?
- Red shift, blue shift, or stupidity?
- Rulers on a heated slab
- Is Mass Really Condensed Energy
- Meco
- gravity / equivalence principle
- hollow spherical blackhole thought experiment
- Velocity of Field Effects
- Yet another SR question
- Spacetime curvature
- Terrell-Penrose Effect
- Why aren't electrons considered "black holes"?
- Gravitational time dilation due to one's own mass
- frame-dragging question
- speed of light
- Speed Of Gravity?
- New Home for Crother's thread
- light clock and teaching of special relativity
- GR Background Independence: Indeterminate and Non-local?
- mass-energy of a system?
- Determinant g = g_{00} det |g_{ij}|
- relativistic balance
- antigravity exist?
- measuring relativistic mass
- Future Viewing
- Common misconceptions of cosmological horizons and superluminal expansion
- General relativity and time dilation
- Length and time for a given metric
- Age of the universe claims
- Are you sure that objects which moves enought fast are not black holes?
- Stress-Energy tensor of a rotating disk
- the basic questions
- minkowski's 4 dimensional world
- E=pc
- Spacetime and Gravity
- relative speeds of photons
- Not banal question on twins
- question on special relativity
- Mass causes curvature?
- Can SR fully explain magnetic force?
- Question About Special Relativity
- Subtle Distinction
- What if inertial mass did NOT = grav. mass?
- Does Newtonian gravity bend light?
- Simulation for Newton's gravity, GR to be added later.
- Is the vacuum stress energy tensor Lorentz invariant ?
- A viewpoint.
- mass near the speed of light?
- 2D Riemannian manifold visualization
- same experiment performed in different inertial reference frames
- Quantum gravitational uncertainty
- Gravitons and Black Holes
- Privileged frame
- Absolute Motion?
- Invariant Momentum
- correct Energy Mass equation
- Mass of a singularity
- Painleve-Gullstrand coordinates
- Time dilation . . . again!
- why is time relative?
- Charged Black Holes
- Interpretation of GR
- guessing the experiment performed in I' by observers from I
- gravitational waves and negative energy.
- the mass of a cube of matter
- Mathmatics Needed
- Cosmological Constant
- Spacetime to mass
- Simple Special Relativity
- Black Holes
- Real frame (strong issue)
- Question about relativity
- Violation of Causality.
- Two black holes falling head-on
- Spacetime in Newtonian kinematics
- Schwarzschild Orbits in Cartesian coordinates
- clock synchronization
- 2 Questions..
- Dilated Time: What were they smoking?
- Clocks on earth
- Of sailing and relativity and titillating patterns
- electric fields of black holes
- Warp Nacelles vs. Warp Bubble
- wormhole
- speed of light and relativity
- Detecting Motion Paradox
- A frame dragging experiment in an accelerated reference frame
- Speed of light in an inertial frame
- Difficulties with interstellar travel
- Learning GR
- Massive objects traveling near the speed of light
- What does light travel in?
- Experimental Proofs
- Einstein Hamiltonian...
- Is gravity a mystery?
- Spinning objects in GR
- Time in SR and relativistic mass
- Gravitational Time Dilation . . . Or not?
- Space-time contraction question
- Oddly-Shaped Event Horizons?
- orthochronous lorentz transf.
- What exactly is spacetime?
- constant speed of light in vaccum?
- Einbein
- A question on SR
- The weak field approximation
- Is the earth flat?
- Speed of light in a black hole
- Time, mass and length
- Experimenting with the speed of gravity
- Difference between mass (relativistic & non)
- Question about speed of light and water
- relativistic and not relativistic motions
- Weyl tensor on 3-dimensional manifold
- doppler effect definition
- Buoyancy in Microgravity
- Ehrenfest paradox (again?)
- Rotating Disc & Speed of Light ???!
- locality and non-locality in period measurement
- length and time inside matter
- Metrics and forces
- =Special Theory Of Relativity=
- Special Relativity Between Reality and Illusion
- Relativity and Temperature
- Can C be relative?
- c
- gravitons & spacetime-curvature-geometry
- A name for this tensor...?
- Moving Charges and Relativity
- 4-Space time rotations...
- No meaning to go backwards in time...
- Relative Velocity
- Equations of Motion...
- What's gravity from the "Quantum" point of view..
- christoffel symbol+covariant derivative+parallel transport
- Confused about time dilation
- The Future is written?
- Galileo relativity
- General relativity and dark matter
- NUmerical GR:..
- Question about speed of light and black holes
- Charge is Invariant
- SR and GR material
- relativity of time
- Kennedy Thorndike
- Relativistic kinetic energy
- Time dilation experiments with spacecraft
- GR Book
- since time slows down in a strong gravitational field, does time stop in a black hole
- is tensor algebra required
- simple relativity question
- speed test in SR
- ruler envy
- magnetism and radiation as a consequence of SR
- General Relativity + Electrodynamics
- gravitational waves everywhere ?
- "Force" in General Relativity...
- Whadda ya call it when ...?
- Black holes & expanding universe
- General Relativity + Electrodynamics #2
- Basic Special Relativity
- concerned on the relativity of lengths
- Loedel Diagrams
- GR and Gravitional Field
- a quick SR question
- Is the universe opalescent?
- What's the meaning of?..
- should i take differential geometry?
- Why were there so many geniuses ?
- When moving fast, you're too busy to age
- Why must the Lorentz Transformations Be Linear?
- From SR to GR in an "easy" math (and physical) way
- Relativity in Minkowski Space and Minkowski Diagram
- Time dilation question. . . .
- Painleve orbits in Cartesian Coordinates
- black holes and the big bang, how are they different?
- speed of light and light
- twins paradox confusion
- speed vector
- Massive particles in SR
- Yet another question that is supposed to turn SR on its head
- basis for the postulate that all physics is the same for all inertial reference frame
- Does Spin Affect Gravity at the Particle Level?
- Infinite Mass, Infinite Energy
- momentum of photon close the sun or black hole
- Speed of Light/Relativity
- Expansion of the Universe
- basic question about relativity
- c constant
- entanglement and special relativity : a paradox
- GR & SR for Dummies
- twin paradox
- Is this paper correct?
- velocity vs distance
- Does energy cause gravity?
- making a black hole
- spacelike intervals?
- More results verifying GR
- time dilation difficulties
- quantum vs relativity
- Black Holes-to-be, Frozen in Time?
- The speed of light and time dilation
- why is there gravity?
- At the speed of light
- the principle of the constancy of the velocity of light
- Relativity Question (Twin Paradox)
- red shifting light
- How does a black hole die?
- What if objects go toward each other rather than away
- Some strange questions about light
- By photon's POV, would light travel infinity in no time?
- Interesting question
- Ricci and K (curvature)
- Relativity of Simultaneity
- The speed of light in a vacuum?
- relativity of L, (t'A - tB), and (tB - tA)
- Question about light
- Does Einstein's General Relativity need to be adjusted for the Higgs field?
- Linear Momentum in GR
- definition of simultaneity
- Why can we not see the future?
- Question About Time Dilation
- physics definition
- Light deflection at high speed
- FTL, from what I have heard.
- gravity v.electromagnetism
- "on the relativity of times"
- Can gravity waves be focussed?
- EM fields and space time?
- worldlines - no need for ref frames?
- Intrinsic Magnetic Moment?
- weak and strong equivalence principles
- Paths of Objects in GR
- Simultaneous events in SR...?
- Charged particle in a magnetic field
- Mass energy question
- Correct derivation of magnetism from SR
- Relativity and Quasars
- graviational wave
- If a black hole had the mass of the entire universe, same mass as the big bang singul
- Assume I travel near c from a planet 5 light years away
- A relativity problem (train & platform)
- Relativity And Light
- A Relativity Problem
- Discussion, please
- Gravity-Space Curving?
- Photon curvature
- Poisson brackets in general relativity
- Question regarding acceleration in spacetime
- already confused with GR
- mutual effects of gravity and velocity on time
- e=mc^2
- Light-speed is infinite, in a certain way?
- The true nature of length contraction
- Why is 4-momentum usually given as a covector?
- Photons and potential energy wells.
- 4-velocity --> 4-acceleration?
- Infinite Curvature
- a question regarding a specific interval of time and GR
- Time dilation and basic math
- Stress-energy tensor as a 2-form
- Relativity VS Absolutism?
- Relative Velocity II
- What is the ACTION?
- Correct formula for gravitational redshift
- Is SR "real"?
- Special Relativty and Inertial Reference Frames...
- How Relativity Connects Electric and Magnetic Fields
- Curvature of Spacetime
- nail and cylinder problem in SR
- High velocity travel.
- Are the transforms instantaneous?
- Solutions of the nonlinear Field Equations
- How exactly are QM & GR incompatible?
- Do Photons Have Mass?
- Einstein's theory of relativity?
- heated discussion about a flaw ...
- Relativity and GPS
- SR transforms of matter/light interactions
- Isolated horizons
- Gyroscopic action on earth surface
- inertial mass, invariant mass and the photon?
- "anti" black hole
- curvature without a mass ?
- A Photons 2D universe?
- Black Holes and the Event Horizon?
- Minkowski Terminology
- Born Rigid Motion - references
- Relativity, LET and Reality
- E = h*nu from Relativity
- stress-energy tensor in curved spacetime
- Why doesn't mass add?
- Einstein's original paper question
- Lorentz Transformation
- Does the Twin Die?
- tracing black holes back
- plane Schwarzschild geometry
- a moving clock lags behind a stationary clock
- Empty space ?
- important note concerning relativity of time
- weight vs time
- difference between spatially homogeneous and isotropic?
- Photon's mass and frequency
- Why does the Lorentz transformations form a group?
- Hawkin's paradox
- Inertial Reference Frames- circular?
- Freezing light contradicts Einstein?
- Time Travel
- Two people in a fast ship
- stress-energy tensor of a perfect fluid
- hi every one
- "Le Sage" Gravity - some questions
- Mass gained Infinitely??
- E = mc2 is not really true in all cases??
- entertaining thought
- 1 s
- "Light cones tipping over"
- figuring out the units for the cosmological constant
- Results of SR
- Proper time for an object falling into a black hole
- Negative Mass and its Implications
- A question
- Trouble mixing SR and Quantum
- Explain spacetime geometry
- was the Schwarzschild geometry acceptable
- pair production and another body?
- Question on Einstein's Equation
- question concerning the relativity of length
- trying to understand relativity of lengths and times
- Schwarzschild metric, cosmological constant
- Universal Gravitation
- Do time and space exist within the universe?
- Schwarzschild radius
- axes of a space-time diagram
- Black hole questions
- On E=mc2
- What is conserved in GR?
- Photon orbits
- Horizon within horizon
- space, c and time question.
- Photons in GR
- beaming effect?
- Successive boosts
- lightbulb paradox
- MMX in Accelerating frame
- The Massless Photon
- Length and black holes
- Why did Einstein use light to define simultaneity?
- Precession of the perihelion - Schwarzschild metric
- Newton's Gravity corrected and Pioneer 10 anomaly
- How should we convey curved space-time?
- Are there other phenomena (besides light) whose speed is invariant?
- Temporal distortion of a moving train
- Gravitational energy : positive or negative ?
- Why was Lorentz transformation known before Einstein explained clock synchronisation
- A submarine problem
- Faster than the speed of light.
- Topology of spacetime
- temporal distortion along train DURING Acceleration
- Is Time Speeding Up?
- GR vs. Newton's calculation
- How much is Special Relativity a needed foundation of General Relativity
- The Unruh effect and light beams
- two body problem in GR
- Invariance of charge
- Does E = mc^2?
- Hubble's law (again)
- A black hole thought experiment
- Proving the Eisntein equations imply the equivalence principle
- What's gamma for?
- more black-hole questions
- how can I show that G=8pT implies the equivalence principle ?
- Speed of light
- Reverse time dilation possible?
- How to use Einsteins Field Equations ?
- Defining GR with Poisson Bracket..
- length contraction
- How do you name
- does c-u mean that c composes with u?
- Are horizons fingerprints of General Relativity ? and more questions ...
- New Member question about Tensors
- Simultaneity in Special Relativity
- perihelion drift in SR and in GR
- Does E exactly equal mc^2?
- Falling into a black hole
- why should the covariant derivative of the metric tensor be 0 ?
- Classic and Relativity Kinetic Energy
- Relativistic Action
- A few simple questions
- Gravitomagnetism !
- time dilation and Lorentz-Einstein transformations
- What's inside a black hole?
- Four-vector physics
- time dilation in space travel
- By the way, in GR, where does the need for curvature come from ?
- Is the relativity of simultaneity relative???
- relationships among metric structure, metric tensor, special and general relativity
- Mechanical experiments testing special relativity?
- A hint of unification?
- How much is the Schwarzschild geometry a characteristic feature of GR
- Mass in Relativity
- Change of speed of light in a gravitational field
- E=mc^2 Confusion
- moderator, help, how to delete my own posts
- Rotating black hole interiors take 2
- Energy of gravitational waves
- What does remain constant in relativity?
- Rotating collapse
- Schwarzschild Radii and Relativistic Mass
- Localization by the doppler effect
- Question about clocks
- AdS and black hole
- Gravitation waves from two objects
- A question about Snyder calculation of imploding stars(1939)
- additiion of relativistic velocities. what do we need to derive it
- Understanding this equation..
- Gravitational length contraction
- MTW wrong ?
- Perhaps gravity is not space-time curvative, and spacetime is nondynamical
- Time travel,a phenomenon?
- electric and magnetic fields
- Minkowski space: basics
- Foliations of spacetime
- Phase space for GR
- Highly symmetric spacetimes
- length contraction and wave length transformation
- Aboslute time in GR??
- synchronized clocks in special relativity
- Thermodynamics and relativity
- Block Universe / Godel's Paradox / Free Will
- F=gm1m2/r^2
- Counting solutions to the EFE?
- Static spherically symmetric perfect fluid solutions
- Black hole interiors?
- Special Relativity
- Author of mathpages.com?
- Symetry, time dilation, twin paradox and all that stuff
- how does GR not allow for antigravity?
- Einstein-Yang-Mills
- Problem with understanding of relative motion.
- light rod (acoustic rod?) what is that?
- Got wrong from right equations
- Specific Orbital Energy at Black holes
- Transformation to a local inertial Frame
- Deriving the Lorentz Force
- Lorentz Transforms Rule
- black holes vs time dilation
- Light, Mass and Black Holes.
- An illustration of a limitation of Wikipedia's utility
- What causes time to progress?
- Light speed and time.
- Co-ordinate vs. true acceleration
- Equivalence principle
- Heisenberg's uncertainty relation not invariant ?
- Mass is 'other' in GR?
- dp/dt in the relativistic domain
- Lorentz-Einstein transformation
- Time dilation within the neighbourhood
- gravitational lensing
- Time Dilation. I don't get it!
- everyday applications of relativity
- Time Travel using the gravitational field of a circulating light beam
- Stocks'theory
- Can space-time homogeneity put limits...
- light speed limit
- Anisotropic speed of light??
- Black Hole Evaporation
- Hard questions
- Massless particles and C
- GR against Newton
- What is the theory of relativity?
- Black holes and time speeding up.
- A simple question on light ...
- Gravity/Orbit Question
- Time relative to size?
- twin problem
- Where does quantum gravity starts ?
- calcing time-dilated trip
- A simple question on relativity
- Please Help....Synchronized Clocks
- Schwarzchild mass
- Two watches, one thrown in the air.
- covariant vs. contravariant
- Falling into a Black Hole
- Black Holes, Quantum Gravity and the Curvature of spacetime
- Causal influence of mass
- How many solutions?
- exceeding the speed of light
- Speed of light, Mass, And black Holes
- Distance in accelerated frames
- How is spacetime curved?
- Sources of GW's
- Gravitational lenses and objects in front of them
- whats the bottom line?
- with the Lorentz-Einstein transformations in hands
- Spinning disk and the speed of light
- "Hidden variable" in SR and GR Relativity??..
- Any research left to do in Special Relativity?
- Derivation of the Lorentz Transformations
- Does velocity "dammage" e=mc^2??
- Asymmetric Schwarzschild solution
- Speed of Gravity
- 2 body problem in GR
- anomalous acceleration of Pioneer 10 and 11
- What does time dilation look like?
- The Speed of Light and Beyond
- Changing Mass
- Problems with light speed?
- a mechanical system in special relativity
- Light Clock Experiment Flawed?
- galactic gravitational field
- Expressing second and its derivatives in terms of seven SI base units
- Length Contraction, Time Dilation and The Principle of Relativity
- The Penny Wheeel Diagram Confusion
- Kennedy & Thorndike
- a problem concerning the Lorentz transformations
- A thought experiment
- Refined Thought Experiment
- Does a Gravitational Field Contribute to itself
- E=mc^2
- Are "two line derivations" harmful in teaching special relativity
- Tests of equivalence principle based on fluid mechanics
- Thought experiment in relativity of simultaneity
- Curvature of Time?
- Gravity Confuses Me
- Gaussian Normal Coordinates
- proper time or proper time interval
- Distance
- Age of the universe
- Null vector help!
- Lie vs. covariant derivative
- Gravitational time dilation
- Light as a Relativistic invariant
- relativistic terminology
- relativistic dynamics without conservation laws
- Mass?
- physics laws and expansion of universe?
- time a fourth dimension? is a boost a rotation?
- Does space and matter co-exist?
- Light and Gravity
- Speed of light
- ageless photon. do photons travel through time?
- Energy requirements for a relativity "launcher"
- Interesting presentation on the current status od SR testing
- Consistent with special relativity?
- Fast object moving along a table
- Down the rabbit hole
- relativistic dynamics as a semantic problem
- A bit introduction to foliation in GR and some question.
- An extended look at light in SR
- How did this get published?
- Isn't time dilation relative?
- VSL theory...
- Photon
- twin and ladder paradoxes help.. really bugging me
- Time dilation and expansion in accelerated motion
- Derivation of the Relativistic Doppler Effect
- GR without Geommetry or coordinates.
- Radio wavelength
- Where's the Catch?
- E=mc^2
- consensus about Van Flandern's ideas on speed of gravity?
- Proper frame of reference and the formation of black holes
- superluminal velocity
- Conservation of energy-mass
- Should a General Relativitist Study Math Proofs?
- What wrong with Lorent transformation here?
- Is there some redundance?
- Space-time
- Black Holes and Photons
- The Twin Paradox
- Formal definition of the Equivalence Principle(s)
- Is Lorentz group correct?
- Is the schwarzchild radius a radius of curvature?
- Can quadropoles slow down gravitational radiation?
- objects near the speed of light
- Are some vacuums more "slippery" than others?
- software for celestial mechanics
- What does a light particle see?
- EP = WEP + (continuity requirements) ?
- Sound faster than light?
- Newbie question about time dilation
- Can a field disturb the geometry of a space?
- Time dialation at Earth's center
- A person travelling through a geodesic.
- Linearity of the Loentz transformations
- energy and time
- Exploring Black Holes: Introduction to General Relativity
- Why cant "forces" travel faster than light speed?
- Mainstream treatment for relativistic Doppler effect under accelerated motion?
- Planck size and Heisenberg and relativity
- Principle of Least Action
- Help me understand E=mc^2
- Question on infinite curvature of the universe
- Formalont-Kopeiken experiment
- Lorentz Transformations and their Inverse
- Non-Einstenian Special Relativity.
- Learning Lorentz group
- Interpreting the Einstein stress-energy tensor T_ab
- some relaxation
- Length contraction
- Very special relativity?
- General Relativity
- Transforations
- original papers on mercury's perihelion drift
- Gravitational Mass
- Metric expansion
- Derivation of the Equation for Relativistic Mass
- Question??
- Time Dilation - Angular Momentum - Mass
- Relativistic non-instantaneous action-at-a-distance interactions
- Classical fields problem
- Killing vectors on a 3D Euclidean space
- From 'the fabric of the cosmos'
- E=mc^2 and Special Relativity
- someone help me with this
- Frames of Reference Question
- Efe Pde
- Why is the Wikipedia article about Bell's spaceship "paradox" disputed at all?
- A complete course in relativity.
- Link btw manifolds and space-time
- Does the expansion of spacetime affect gravitationally bound object?
- Mass of Light (photons) at C
- Looking for knowledge.
- On plane of simultaneity
- Electric Field, Mass, Length
- Time dilation
- Index notation vs Dirac notation
- photon momentum and energy
- Singularities
- Electromantics phenomena
- Light has Gravity?
- Simultaneity
- 'Gravitoelectromagnetometrics' software
- photon dimensions
- Maxwellian puzzle or paradox?
- A very interesting post by Lubos Mott
- Against E=mc^2
- non geodisic motion
- "acceleration is not in direction of force"
- Transformation equations presented in a different way
- "Proper" accelerations and rigid bodies.
- Can someone help me with this??
- Connections and Curvature
- proper time
- Derivation of the Equation for Relativistic Momentum
- is clock synchronization compulsory
- Time measurement
- relativistic elasticity
- Lorentz group, Poincaré group and conformal group
- Gravity and fishing line.
- Mass transported at speed of light
- Quiz: mass of photons, E=mc˛
- some relativity questions for coleagues
- Photon dimensions
- Maybe im onto something or i dont have a clue what im on ablout
- Is a "uniform gravitational field" a gravitational field?
- Photons traveling in space
- General Relativity is mainly public funded ...
- Velocity
- Invariance of the interval
- Force in Special Relativity
- Acceleration
- radar echo and clock synchronization
- Problem understanding relativistic momentum
- why c in a vacuum?
- a simple observation regarding the equivalence of acceleration and gravity
- surprising consequences in SR
- Double gravitational potential energy paradox
- Massless particles and C
- Trouble with g in GRT
- What is Special Relativity based upon?
- Nice video clip explaining Relativity for beginners
- Redshift/blueshift and time dilation
- photon dynamic mass
- Special and general relativity resources
- Square Root in Special Relativity
- What is this???
- Carlip's explanation of lack of gravitational aberration
- Question
- Have absolute gravitational singularities ever formed?
- space time question
- riding on a beam of light - time and space
- principle of extremal aging
- Gravito-Electro-Magnetism problem
- three symbols i can never understand in relativity tesbooks
- Warped space
- relativistic addition of velocities without lorentz transformations
- Metric sign
- Light exists outside of time?
- temperature of space-time?
- Matter = E ?
- Space time curve
- Moving Pendulum
- Time Dilation Troubles in SR
- Relative velocity problem
- Spacetime and problem of 4th dimesion.
- a possible question concerning the photon
- Einstein Hilbert Action
- Is space infinitely divisible?
- killing's equation from infinitesimal transformation
- Equivalence principle & nonlinearity
- killing vector in kruskal coordinates
- The Lorentz Transformations and vector components
- Rod travelling at near c
- Connection between Scalar fields and Field Thoeries
- reference frame of light
- lorentz transformation and lorentz-einstein transformations
- Physical Interactions over Great Distances...
- energy-momentum conservation equation
- 'one form' vector??
- Is there a maximum doppler shift?
- c+V and c-V
- Absolute reference frame
- math light bending by gravity
- Question on Penrose diagram for Schwazschild metric
- stupid question about page 70 in a first course in GR
- A theoretical Q about gravity
- Twin Paradox in S^3.
- Solar wind and gravity forces.
- Near light velocity.
- photons in the stationary wave?
- Mass Question
- Simple Question
- Simple question on curvature
- Dumb Question
- Lorentz-Transformation and time
- Experiencing time faster rathe than slower
- Theory of Relativity
- Time elapsed for watch with crystal normal or parallel to g
- About Curvature
- Questions about kinetic energy and gravitation
- Quick question on notation.
- relative weight
- Gravitational field has mass???
- Understanding simultaneity
- Points of energy
- A question about a thought experiment in space
- probably dumb question. problem understanding formula
- Stupid Question [photons, mass, & gravity]
- If a "charged particle" is free falling in the gravitational field----------
- Relativity Question
- Location of new mass when added to grav system
- "Whether a person will die or not" is relative
- Relative No-emission Propulsion
- Twin Paradox
- What's exactly simultaneity?
- Simultaneity, contraction and interval.
- Space without time?
- Principle of Relativity violation
- meaning of the torsion tensor
- Einstein-Cartan Theory
- Gravity Wave Detectors
- Concepts for Granted
- Visser: Lorentzian wormholes. From Einstein to Hawking 1996
- invariance of uxw (velocityxphase velocity)
- Gravitational radiation reaction
- Relative time question?
- Curious
- Linear algebra and tensors in GR
- Gravity probe-B
- Time dilation-- V relative to what?
- The physical nature of spacetime
- Is this the fabric of the universe?
- inertial frame
- Stress-Energy
- geodesic deviation
- A question about constant acceleration close to the speed of light
- Doppler shift formula and the assumptions behind it
- Energy as Dimension
- is the first postulate neccessary?
- E=mc2 Energy converts to matter
- Relativity
- Relativistic Kinetic Energy
- Speed of a photon relative to another photon
- Double Special Relativity (DSR) fake or real??
- Black hole entropy as a Noether Charge
- History question on aether
- Sites
- Metric versus Tetrad formulation of relativity
- Implications of geodesiacs(philosophical)
- Question about Mass(special relativity)
- Torsion tensor: Geometric interpretation
- twin #1 is calling twin #2 in mid flight on instant-stellar phone
- Questions about the speed of light.
- Confused by D'alembertian operator in EM
- D'Alembertian question again (sorry)
- detonator paradox
- kinetic energy transformation
- a few questions from introduction to sr by rindler.
- Proving invariance of scalar product
- I Need the explaination of "The image of formation of black hole"
- Twin Paradox Theory
- Tensor field visualizations of numerical simulations of GR
- The Nature of Time?
- Electric Current in Special Relativity
- Increasing speed
- If I swing my arm, it can emit gravitational waves??
- Two body problem
- Some Inertial Frames may br more Equivalnet than Others
- Time Dilation
- PDEs in SR?
- Abraham Zelmanov's Chronometric Invariants
- Einstein Thought Experiment
- Is General Relativity a Gauge Theory?
- How fast is gravity?
- Proof of Universe Expansion
- antisymmetrized tensor product
- Delta T > To???
- schwarzschild black hole/kruskal extension
- Does a magnet slow time?
- metric of supermassive black holes
- Question on Relativistic Doppler Shift
- Prediction on Gravity Probe B Data
- confused about SR
- time and the 4th dimension
- Photons
- relativistic limit?
- twin paradox again (yes again)
- Time and Gravity
- What is the first result on Gravity Probe B?
- "Independent Continuum"
- Effect of gravitational potential on energy
- time for light
- Parts of a photon
- A question about time dialation
- Why is the speed of light?
- A question about general relativity ?
- tensor pertubration: Hello to everyone
- clock synchronization problem
- The Whittaker metric
- Relativistic invariance
- Spacetime, the Universe, the Present and the Future
- Behaviour of light
- SR, GR and Twin Paradox
- Gps
- General covariance
- Observing an astronaut falling into a black hole
- The moon
- Photon wavelength in expanding universe
- velocity transformation
- Original motivations for GR??
- temperature and speed of clocks
- Some simple minded aspects of gravity
- Photoelectric effect and SR
- Gravitomagnetism and acceleration
- practical meaning of simultaneity calculations?
- Does gravitational waves participate in gravitation interaction??
- Death by black hole
- Question About Speed of Light and Energy
- Time Dilation
- What is one full orbit
- Relativity of Acceleration
- einstein hilbert action
- Hawking-Penrose 1994 Debate
- Time in GR
- What is it about speed that affects time?
- Stress-energy tensor of a wire under stress
- General Relativity vs Newtonian Mechanics
- Relationship between E=mc^2 and gravity
- Lorentz Factor - Help!
- Train question.
- Which direction did they measure a meter?
- Rotating black holes
- Some short questions about mathematics
- Ticking clocks
- Liftetime of photons in matter
- Frame fields vs. Coordinate bases
- How is 3-space curved without a fourth spatial dimension?
- A question about a relativity light clock
- Looking out the window of a fast ship
- Vacuum solutions
- question about the energy momentum tensor
- Geodesics between two points ?
- Connection of General relativity and geometric Refraction of light
- What's the ratio?
- Snell's Law
- Hi, can't find the way to debunk this...
- Light Speed Relativity
- any films about relativity?
- what do they do in numerical GR ?
- Professionally researched relativistic orbits
- About interpretations and logic...
- question about the weak field approximation
- Blackholes
- f=ma in relativistic terms
- Static vs Stationary?
- time as a function of distance for constant a
- particle production in curved spacetime
- Physics Articles - sr, gr etc
- Question on advance of perihelion.
- Galileo
- parametric equations for geodesics
- Need mental picture
- Quick beginer question
- Light, Elevators and Gravity
- Calculating distance between two points in potential
- Non-relativistic derivation of Schwarzschild's equation
- Light reaction
- Lightspeed not constant?
- Observing backwards time?
- Lorentz-Fitzgerald Contraction or Time Dilation?
- gr vs. newtonian orbits
- Geodesic
- Confused in basic SR
- Speed of light in the universe, experimental data
- Canadian PM a Geodesic Deviant?
- How to survive in a black hole: Myth Debunked
- flow of time
- Acceleration of a point mass
- Very simple relativity questions
- What is the Theory of Elasticity?
- Cauchy surface
- time dilation
- Renormalized energy momentum tensor in Milne spacetime
- time travel
- mass of a system of two photons
- Nothing can exceed the speed of light
- time dilation
- Sign of Metric
- New to Relativity Theory.
- what's wrong with this?
- Please help me understand SR
- Complex four vector algebra in relativity
- Light mass?
- General Relativity for Dummies
- time dilation... thx!
- Proof of mass dilation
- time dilation without acceleration
- From the scalar of curvature (Newman-Penrose formalism) to the Ricci scalar
- Simple Kaluza Klein question
- Fundamental identity of SR valid in GR?
- Smolin's in depth perspective on Einstein, man and mind (NYRB)
- Time does not run slower or faster
- Light shone in a train bouncing off mirrors
- Length of time
- Static black holes defy theory
- SR Confusion!
- Can space-time curvature be applied to artificial satellites.
- Questions about motion equations
- Questions about GR
- Energy-mom tensor does not determine curvature tensor uniquely ???
- trying to wrap my pea sized brain around the universe.
- Do light and gravity take identical geodesics?
- Question about deflection of light test
- Physical Intuition
- Apparent superluminal velocity of galaxies
- schwarzchild solution with cosmological constant
- Black hole Vs Light
- Speed of light while chasing after it
- Theory of Everything
- Curvature inside a cavity
- Einstein-Strauss solution with one or two bubbles
- I have devised away to travel Faster Than Light
- Orbital Mechanics
- gr-qc/921001 - the constraint algebra of general relativity
- time dilation in plain english
- Why Light?
- Was Einstein wrong?
- why c=1 in relativistic equations
- I am attempting a condition where Newton and Einstein agree
- energy momentum tensor for entangled system
- Basics: Speed
- The Claim: "Gravitation is acceleration."
- Black holes and entropy: energy with respect to infinity
- Constant Acceleration
- Aging related to speed of the Earth
- a quick question of light
- Relativity in simple
- invariant and covariant in special relativity
- My SR Document
- Speed of light
- Roy Kerr on the Kerr vacuum
- How did Maxwell build his theory
- photon gas and relativity
- No width contraction in Michelson Morley Experiment, why?
- stress-energy tensor and pressure
- About the so-call "two errors (mistakes)" in Misner-Thorne-Wheeler
- I have a question...
- GR explanation of Newtonian Phenomena
- experimental verification
- Thought Question
- particles collisions at speeds greater than c :surprised
- Q? - Relativistic Mass
- SL(2,C) etc
- electromagnetic wave in media
- non-linear transformations for dummies
- *pervect - Local Lorentz Frame
- einstein was wrong?
- Stress-Energy
- Mass and Velocity
- Correct My Misunderstanding of Special Relativity
- Why black holes can have static electric fields???
- Bulb problem
- Approaching a Black Hole
- speed of shadows
- how can a black hole be created, any model
- Why objects with different mass fall with same velocity??
- associated photon
- doppler effect / expanding universe . trouble uniting both concepts???
- Lorentz Transformations
- The Ball is There!
- does light have its own gravity field?
- Synchrotron Radiation
- Can't be a 'preferred' frame.
- Same old twin paradox
- detonator paradox
- What's the G-forces in a black hole event horizon?
- Time as a dimension
- GR Approximation for PSR 1913+16
- gravitational polarity, called antigravity
- Matter tensor
- laws of physics
- Can Fermat's principle be applied to gravitational lensing?
- NYT article about the speed of shadow > c
- when is a derivation of the Lorentz transformation "good"
- Moving throuh Spacetime
- nature of time
- relativistic thermodynamics problem
- Einstein Group
- Nothing can travel faster than light
- No such thing as a stupid question, just stupid..
- Please save me from my idiocy
- anomalous refractive index? How doesnt this defie relativity
- Does a gravitational field have mass?
- Length (and Mass) vs. Time Dilation
- conflict between electrodynamics and classical relativity?
- Relative speed of a photon - mk2
- The GPS paradox
- How does one construct the action which gives the equation of motion?
- transformation of epsilon and miu
- buchdal's theorem
- Does black hole's gravity really travel out of it's own Event Horizon?
- Velocity...
- special relativity puzzle
- Angle independence of Michelson-Morley type experiments
- two body problem in Gr
- SR from GR
- Relativity Theory: What is needed?
- How can "empty space" expand? (Reality behind the GR equations.)
- Can we travel faster than the speed of light?
- Dark Energy Interation With Gravity?
- length contraction from two inertial frames
- is time in essence - constant?
- spacetime diagrams.
- are causes relative?
- accelerated frames
- Pythorean Theorem and General Relativity
- Swartzchild metric and free fall
- Special Frames and Sci-Fi
- clock synchronization problem
- How Far Can Gravity Reach?
- Evidence of Equivalence?
- Non-rest mass, is it real?
- Are gravitational "fields" additive?
- Magnetism
- time & space
- transformation of three-force
- Basic problem
- Empty space is something?
- Considering Relative Simultaneity - Relying on clocks instead of observers
- accelerating frame in special relativity
- electromagnetic wave propagation
- Does motion break existing symmetries?
- lorentz transformation
- energy-momentum density of point particle
- Need a little help on special relativity.
- Rotating Disk
- Coordinate speed of light vs. gravitational time dilation?
- Is energy conserved in an expanding universe?
- Light under light gravitational force
- Is expansion of space relative?
- throwing a string into a blackhole
- reducing the time invested in teaching SR
- Wormholes: Are they practical?
- rotating rod
- clock readings lorentz transformation
- Photon beyond light speed?(?tachyon?)
- Speed of light relative to universe expansion?
- time like space like
- GR as a Gauge theory ??
- spacelike travel?
- Lorentz Transformation
- time dilation
- relative speed of tachyons greater than c?
- standard derivation??
- Time dilation???
- The Inertia of Stress
- Relativity Visualized
- Addition of velocities: What actually happens?
- Lorentz's Derivation
- Noobish question on time dilation!
- Constant Velocity
- Faster than the speed of light??
- spacetime interval of zero
- pertinence of relativity of simultaneity
- A short relativistic story but what is its moral?
- Scientists claims light speed barrier broken
- Looking for something interesting..
- Researchers create gravity in lab experiment
- four momentum of a field
- is light speed fixed?
- do tachyons exist!!
- Penrose Lecture
- Time Travel Machine Outlined
- Time dilation and the mind.
- moment of inertia corrected with relativity
- Derivation Of Lorentz Transformation by Lawden
- accelerated frames in SR
- GRAVITY can BIND LIGHT?
- Poincare transform
- invariance of c and clock synchronization
- SR predictions on an recent microwave experiement
- Help! Historical evolution of understanding of SR
- heres a question plz see if anyone could help me with this
- electromagnetism with unsteady boundaries
- Another question on time dilation
- Light faster than light?
- 3d simulation of special relativity
- confused about gravitaional time dilation math
- Speed of Light and Black holes
- Time dilation on accelerated reference frames
- Surely k-calculus kT is 'mixing units'
- Magnetic field, frames of reference ...
- Understanding Special Relativity
- curved space-time observed and confirmed
- Yet another spaceship thought experiment
- Midframe Lemma?
- Time and Time again.
- Just from personal study, is this possible?
- stress energy tensor
- General formula for space-time distortion?
- general relativity vs quantum field theory
- help: Lorentz transformations with and without thought experiments
- Modified Twin Paradox. (Experts required).
- Hooke's law and SR
- EFE simulation
- direct and inverse Lorentz transformation
- Time Dilation and Aging?
- local coordinates, physical coordinates
- Symmetry in Travel and Time Dilation
- wormhole and relative motion
- Time-like curves
- photons and gravity
- Hyperelasticity and the relativistic Lagrangian of a 1-dimensional rod
- Is the speed of light constant?
- Direction of Gravitomagnetism
- Relavistic Length
- Verification of the Lorentz contraction of the space
- Spacetime -- it warps, it curves, but can't expand??
- Time dilation
- Simple Lorentz transformation. Are there objections
- lorentz transformation
- what is the gauge group of general relativity?
- Variations, Euler-Lagrange, and Stokes
- S.R Question.
- Space time curvature
- Special Relativity
- Superconductors and Gravitomagnetism
- On the way to showing that LT is linear
- What do you make of this?
- Photon acceleration
- who brought up the idea of a black hole at planck length?
- Causal paradoxes - how to solve them?
- speed of wave
- Gravity ficticuous force because it's relative to mass?
- Gradients in the curvature of space-time
- when sun is gone, gravity of light, which one faster?
- Frequency and C
- Universe expansion
- Does the sum of the mass of two bodies vary with the distance between them ?
- please tell me why i'm wrong...
- Time gap between explosions in moving frame of reference
- How much does the universe weigh?
- What is speed?
- Dark Energy as a Gravitational Field?
- Question on Relativity.
- how relative is inertia ?
- simple question about the lorentz transformation
- speed of photons inside a very powerful gravitational wave
- Twin Paradox
- Does the shape of the curve, that is produced in space by a mass, have a name ?
- Infinite Acceleration
- How to measure the lack of external force during free fall?
- speed of light
- Speeding up time?
- Phantastic Photons
- Approximation of the FE feat. "loose notation"
- Thought Experiment - Measuring speed of light
- Can someone give me a good plausible answer
- Clocks in gravitational field
- Dr. Robert Forward's curvature gradient detector
- need a little help please
- How Do We Know Gravity Is A Force?
- robertson-walker metric
- Event horizon of a Black Hole
- The Origins of the Universe?
- the best theory ever
- Michelson- Morley's experiment
- Center of inertia?
- experimental proofs of increaseof mass with v
- Distance to Light
- Why can't a photon exceed the speed of light?
- Inertial dependence upon local matter
- gravity with a mass current
- Electric / magnetic field transformations
- A trivial question
- Tensors: Lorentz vs Galilean invariance
- Raindrops and Gravity
- Special relativity & length contraction
- Group velocity and speed of information
- the runner on the train paradox.
- Confused by time dilation!!
- What kind of a bomb? answer:the exploding kind.
- changing of one of the previous topics
- another qn about light
- relativistic centripetal force
- Is there something special about standing on a planet?
- The classical aether vs. the modern vacuum
- reference frames for photon collisions
- Relative Twin Tango
- silly question about special relativity
- Speed of light - can it be exceeded?
- Help with a thought experiment.
- Why doesn't DEceleration add mass as well?
- Electric field and gravitational field
- Relativistic orbiting
- Special Relativity & Light
- simple lorentz trans. question
- Derivation of Lorentz Transformation
- Relativistic De Broglie Relation
- a question
- Invariant Spacetime Interval
- Everything has a reason
- How to get inverse Lorentz tranformation from "direct" Lorentz transformation
- Special relativity - observing spinning objects
- Gravity and Photon
- Standing waves in GR
- Special Relativity GRE Question
- Inertial System
- SR postulates
- High Energy Gamma Rays Go Slower Than the Speed of Light?
- information theory+relativity
- Thought Experiment on ToR postulate-1
- energy, heat, and relativity
- About the Non-paradoxicality of the Twin Paradox
- Schwarzchild solution and orbit precession
- Lorentz boost for electron
- How would you observe outside events on a spacecraft?
- Rest mass
- Center of the Universe
- Gravity For The Masses website
- c independent of observer and emitter
- Shapiro time delay?
- Polchinski's paradox
- Dude, where's my anti-graviton?
- Frame dragging effects on speed of light
- Gravity: real force or artefact of acceleration?
- Twin Paradox
- Koide and Kodama on relativistic brownian motion
- General newbie questions regarding the speed of light
- Near light angular momentum
- Any good suggestions on SR/GR
- Lorentz invariance..
- photon questions
- Twin Paradox Simplified
- christoffell symbols
- E=mc2 without SR
- Light Question
- How much research is left to do in the differential geometry/topology aspect of GR?
- Information traveling faster than light?
- Relativity Express
- Relativity Help
- Energy of light
- relativistic rockets
- Light in other medium
- relativistic effects
- relativistic mechanical index of refraction
- Question about going faster than speed of light
- Magnets (and other things) at the speed of light
- On the Notations of Length Contraction and Time Dilation
- Speed of Light and the Causality Problem
- relativity software package
- Wormholes, parallel universes, negative mass
- If such an object does exists...
- Relativity and Electromagnetism
- GPS clocks
- Where is the mistake?
- Total energy/mass in stationary GR
- Constraints on metric coefficients in General Relativity (GR)
- Speed of Light vs Light Years
- Maths and high speed
- manifolds
- Theories of gravity
- de broglie and light
- Thermodynamics and Relativity: observing gases, rel. effects
- Chasing a beam of light
- research on general relativity!
- limit to strength of electron magnetic field
- Does kinetic energy vary by frame of reference?
- Relativistic Paradox
- Orbital Velocity at r=3M?
- Flat-space picture of gravity vs. General Relativity
- Black Holes
- SR problem..
- DEC with E/M and scalar fields
- Maxwell's equations in higher dimensions.
- Time dilation, length contraction
- Speed/Aging Theory
- Galileo's experiment and Equivalence Principle
- Slowing Down a Photon
- Does a gravitational field have mass?
- I have a question on motion!
- Paper discussing the mathematics of relativity
- Speed of Light
- invariance of combinations of physical quantities
- speed's influence on space time
- What does curvature of spacetime really mean?
- Peering into the heart of a black hole
- About the validity of Einstein’s 1905 Principle of Relativity
- lorentz transformation active or passive？
- Special Relativity, Existence, and Big Bang
- Looking for complete explanation of logic behind relativity
- Relativistic Lagrangian
- what is the nature of gravity constant?
- a question with the readings of synchronized clocks
- Speed of light
- Boosting the potential
- Upper Limit of Acceleration?
- Hubbles Law violates c?
- Question about events inside black holes
- Interaction of 2 black holes
- Relativity, the flow of time and speed
- Einstein's papers translated to english?
- time dialtion tick tick skeptick
- a limit problem in SR
- Apparent position and light travel time
- Question on Curvature of Space
- GR and acceleration
- can somebody read this and tell me the flaw in the argument?
- tick tick tick tick boom
- Crackpot argument on Physicsforums gets published!?
- Modelling Einstein's Thought Experiments (Trains + Mirrors)
- equivalence principle
- EFE in empty space
- why torsion free metric compatible connection ???
- Speed of light limitation
- A question for relativists
- Brightness
- Gravity/conservation of energy?
- Infinite energy, light speed.
- 4-vectors and the like
- Faster than light
- Why the metric is covariantly constant?
- photon emmission
- Topology outside vs inside black hole
- time dilation
- speed of light in a medium
- When a photon is absorbed
- Is Einstein's etheric model of GR compatible with modern physics?
- Topology of closed timelike curves (CTC)
- Doubt on FRAME of REF(Its killing me!!!!!!Help)
- Time Travel
- could a moving object become a black hole?
- Derivation of the Teukolsky Equation
- Light through a medium
- Tidal Effects of Non-Uniform Gravitational Fields in Free-falling Coaches
- homogeneity and isotropy
- Where do CTCs go?
- Spinning disc
- Software to vary the Action
- Derivation of Lorentz Transformation
- Linearized gravity / Linearized Einstein Field Equations / GEM
- Geodesic applied to twins paradox
- which solutions of GR are experimentally tested
- simultaneity check
- Length contraction.
- My 9-year-old son has a physics questions that I couldn't answer...
- 2 Masses accelerating to eachother
- The spreading stain
- General relativity concept
- Lorentz Transform in Non-Minkowski Spaces
- Closing door paradox?
- einstein/ michelson-morely
- radiation around spherical object
- Constant Acceleration seen in an inertial frame
- Newtonian limit of GR
- Cooperstock &Tieu's most recent paper
- Could moving observer be stationary vs moving and still give Albert the same results
- Time dilation question
- EINSTEIN-VLASLOV EQUATION (to chriss HILMAN or anyone else who cares)
- Does a Black Hole Ever Collapse?
- Relativistic wheel and orbit connection?
- De Sitter relativity and Lorentz contraction
- Is the Loedel Diagram a Special Case of the Minkowski Spacetime Diagram?
- Free fall coordinates in Schwarzschild?
- kinetic theory in general relativity
- schwarzschild de sitter solution
- What is general covariance?
- Modified gravitation ; how to make it relativistic ?
- Mass of a Rotating Cylinder
- Special Relativity and GPS
- How do we know that gravity is an attractive force?
- Rotating Space Station
- Exotic matter
- Galilean vs Lorentz transformation equations
- Following Schwartz's argument re: measuring (g-2)
- Mach's Principle and Equivalence
- e=mc^2 in 1,2,3,5,6... dimentions?
- blackhole speed question.
- Newtonian limit of LCDM
- Lambda Warp Drive....
- Photon-Electron collision problem
- another question on black hole
- c / speed of light
- The Schwarzschild metric...
- ergosphere questions
- Dark Matter and Velocity
- Gravitational mass
- Simultaneity in Relativity: self-contradictory?
- Newtonian perturbations to Minkowski
- Time dilation and the photon clock
- clock synchronization
- Uniform Acceleration and Gravity (again)
- The twins paradox and explanation
- General Relativity: gravitational waves
- scanned relativity books on the internet
- Regarding the conversion of kinetic energy to mass
- Restrictions on Riemann components
- Problem with equivalence principle.
- Is space curvature misleading?
- Stationary axisymmetric spacetime
- Educational value of spacetime diagrams
- Layman Needing Research Info...
- Force propagation and length contraction
- Just how many different theories of gravity are there?
- A Question About Special Relativity's Basics
- Relative speeds
- Puzzled by light???
- Relativity paradox!
- The Twin Paradox Paradox.
- space-time interval question
- About the 4 potential
- black hole
- Why does light have invarient speed?
- Must measurement of time reference light?
- time slows down when you approach the speed of light?
- FAQ: Experimental Basis of Special Relativity
- Space-time Fabric: how what and why it warps?
- when the revolution of the earth on its axis accelerates
- Math of an accelerating spaceship
- Is the direction of a pulse from a laser pen dependent on the observer?
- Schwarzschild solution and Machian variable G
- Lost sleep on this question...
- terminology problem
- Current status of gravitational collapse (full quantum mechanical treatment).
- Gravity Wells
- Is gravity a force?
- Energy in relation to space and time
- relativistic velocity derivation under constant force
- Video lectures on GR?
- lorentz contraction from space-time interval invariance
- Time Dilation
- What is gravity?
- A new veiw on gravity
- Problem with thought experiment
- A new angle on the Right Angle Lever Paradox.
- Light has been bugging me.
- Photon's frame of reference
- Kerr solution as complex transformation
- Axiomatizing relativity
- Gravitomagnetism?
- lorentz transformation
- Special relativity review
- Twin Paradox
- Gravity vs. Acceleration
- postulate and special relativity
- Relativity Stumper for you Einsteins
- Relativistic Thermodynamics
- Does a sphere remain a sphere
- Kinetic Energy and Wormholes
- How is time and space affected by the warps in General Relativity?
- Q On Lorentz Factor
- Gravitational Self-Interaction
- Where does time travel fastest? And a moving galaxy/light speed question.
- Velocity transformation
- Falling into a Black Hole
- from one space dimension to two space dimensions in special relativity
- Gravitational Wave Rocket
- length contraction derivation
- Increase of mass and legth contracts with speed?
- Thoughts (of an amateur) on the Solution to the Twin Paradox
- If light has no mass, how can it have energy according to e=mc2?
- Hamilton in GR
- Time Dilation and space missions
- stress energy tensor for rotating disc
- Light speed paradox?
- Twin paradox
- contraction of riemann tensor
- relativistic terminology
- General Relativity Papers
- Relative Time
- phase invariance of e.m. waves
- the Lorentz group generator
- Does c change in this case?
- My Black Holes brainteaser
- Thought experiment revisited
- Faster than light.
- Light V/S non EM wave.
- simulation: ray of light near black hole
- Problems in General Relativity
- einstein began looking for gravity in the electromagnetic waves
- Time, entropy and relativity
- Lorentz contraction of box filled with gas
- Relativity and my Intergalactic Space Race...
- GR and Curvature
- A question about relativity theory?
- Is it not possible to travel in light speed?
- x' relative to S' and relative to S
- Typical speed
- Tachyons travel backward in time?
- Does time pass for photons?
- could general relativity be right simply because it explains gravity?
- Portal Discussion: Human at Speed of Light
- Preferred Coordinates
- Observed Time vs Observed Duration
- Why nothing is observed going back in time
- What happens to time when gravity is absent
- “Two-spaceship paradox” This solution incorrect
- The Equivalence Principle
- the twins in a big circle
- is this a suitable explanation of relativity?
- annals of physics
- Tachyons and photons
- How does a photon's event horizon look like?
- Relativity Concerning Small Particles
- conformal transformations and the Einstein frame
- how does photon gain its speed in no time?
- space-time transformations with different shape
- Basic Q about Relativity
- Q about relativistic mass increase, starship
- Differences between Lorentz scalars and Lorentz invariants
- Why all at around the same time?
- Plot a point on Earth through the Universe
- Question about Relativity and the apparent direction of light
- From Geometry to Kinematics
- Twin Paradox Content
- Affects of gravity on oxygen
- Cosmological constant as a perfect fluid
- A laser time machine
- Space without time?
- Does time stands still at c? And is room a point then?
- Nature of Spacetime
- Stress Energy Tensor
- No seriously; Can we, maybe, go to the past?
- curl in GR
- Help me get modern please?
- Proof of invariance of gas pressure
- Lorentz interval
- Atomic clocks and relativity
- Wormholes
- Schwarzschild Metric
- Name of the topic
- speeds in space
- Einstein's ultimate conclusion regarding ether and Relativity?
- Time dilation for Dummies
- Q about the spacetime bending
- Falloff behaviour of light vs gravitation
- Does pressure resist acceleration?
- Can you actually measure an object's velocity?
- why R-1/2gR
- Simultaneity
- Rotational reference frames
- On Pressure/Gravity/The Expanding Universe
- Torsion in GR
- Waves in GR
- Climbing out of a Black Hole?
- Beyond the Twin Paradox
- from Lorentz transformatios to Bondi's approach
- blackholes and planets
- question on traveling spaceships
- On Lorentz transform.
- Question about relativity
- why???
- Spacetime transformations or not?
- Disgruntled observer
- contravariant derivative?
- Special Relativity, 2nd postulate, and a dilemma
- Traveling faster than the speed of light?
- Tethered to the Moon
- The light clock and time dilation.
- grtensor tutorials
- Speed of Light question
- Radius of a black hole
- Poincaré's 1900 paper on Lorentz's theory
- help with wording my thoughts
- Relativistic Aberration?
- The synchronization procedure
- Spherical shell in 2-space
- Black holes and the time issue
- paraboloid problem
- Reverse-tracing Einstein's field equation
- line element on a torus
- I have 2 questions about relativity
- Emission/Absorption
- Detecting absolute motion?
- Help with explaining why BigBang was not a Black Hole to High School physics students
- Size of an inertial frame
- Dustparticles and geodesics
- Proper time of accelerated clocks
- Radial geodesic distance with Schwarzschild's solution
- Help! Deriving formula for Einstein Radius
- Please be gentle to a layman
- speed of light
- Deriving Law of Conservation of Energy from E=MC2
- non-standard clock synchronization
- light moves at C from all frames of references?
- relativity effects on photons
- energy-mom tensor of charged dust (homogeneous and isotropic)
- Question about Sticky
- Angular momentum
- Local acceleration experienced by observer
- Simple Question
- Rotating rocket experiment
- The 4th Dimension.
- Kerr
- conventionality and clock symchrnization
- Can information travel faster than light?
- Colliding rotating black holes
- ct axis??
- SR and a train
- Simple problem driving me nuts :-)
- Finding required energy
- Clarification of Terminology - GR Stress-Energy Tensor
- Black hole existence
- Deriving the line element in homogenous isotropic space
- Coordinate acceleration without a Force !!!!!!!!
- Aether attached to earth
- Spinning Singularities?
- Information for the uninformed
- speed of light
- Noob with a question about lightspeed travel.
- Adjoint of functional derivative in superspace
- Massive objects moving too fast
- Are the the gravitational mass and the inertia of the sun the same?
- How close to light speed can you theoretically get?
- Units, Relativistic Momentum
- Help with showing the existance of the Schwarzschild singularity at r=0.
- Gravity, cause or effect of time dilation?
- Relative Motion, a confusion!
- elapsed time on accelerating clock
- Plotting space-time curvatures as curved 2D-surfaces
- Why does light have invarient speed?
- Mass increase
- derivative of metric and log identity
- A noob question about relativity.
- Schwarzschild in 5D
- Time dilation derivation
- Curvature inside a cavity
- Violations of Causality
- parallel transport approximation
- traveling into the future in order to travel back into the past
- GR explanation of Newtonian Phenomena
- Is the GR self-contradicting?
- Question on Special Relativity.
- Is relativity a gauge theory?
- Show Lorentz invariance for Euler-Lagrange's equations- how?
- General Relativity
- Help in deriving the pair of singularities in an Einstein-Rosen bridge.
- Computational GR
- Understanding Time and Space as One entity.
- A question concerning the lorentz transformation derivation
- absolute simultaneity
- SR/GR Space-Time
- Interesting new take on gravitation?
- Help with Space-time Bend.
- Rotating Spacetime - a question
- Quick Notation Question
- Coupling spinors to gravity
- Gravitational Waves in other dimensions
- How infinite does time get by gamma....
- hypothesis about speed of light
- Speed of light.
- Two questions about the ADM formalism
- A concept of Relativity
- Where does the energy go?
- Relativity Questions
- Absolute acceleration?
- Energy-momentum...
- Confusion about signal latency vs true relativity
- Why do people insist on the graviton..
- General Coordinate transfos vs Lorentz transfos in GR
- Energy-Momentum Tensor
- Derivative of the metric tensor
- Did Einstein "guess" the time-dilation equation?
- Doppler Effect and absolute simultaneity
- Maxwell vs Newton
- Revisiting the lesson of the "Relativity of Simultaneity"
- transformation
- Curvature of Time?
- What does a clock measure?
- about the Einstein tensor
- Time and Gravity
- The Nature of Time?
- The physical nature of spacetime
- Einstein - 1911 paper
- tough relativity problem
- bending of light?
- A hypothetical question
- does gravity move off?
- Time dilation
- Does a photon age?
- deflection angle of a ray grazing the sun
- Locality, Time, Speed, Distance, and one confused person.
- Geodesic deviation equation
- Show that ds^2 = ds'^2
- twins paradox confusion
- What's wrong with Michelson's explanation of ether dragging?
- Blackholes light gravity
- Relativistic heat force.
- Is light travel time for event time calculation usually implicit?
- Time Dilation. I don't get it!
- Ricci tensor equals a constant times the metric
- Meaning of diffeomorphism invariance?
- More Spacecraft Velocity Anomalies
- So what has happened to the GPE (Gravitational Potential Energy)?
- Gravity: real force or artefact of acceleration?
- Mass transfer between black holes
- Q
- Magnetism and Relativity
- unanswered in class
- Deriving gravitational redshift using the energy change approach...
- Does a dimension have dimensions?
- Newton's Bucket
- the Lorentz Group in General Relativity
- Maximum speed of anything, temperature
- GR and QM conflict
- BKL Conjecture
- Size of a black hole?
- where GR doesn't work.
- Effect of gravitational potential on energy
- A Myth about Black Holes
- Classical Gravity versus GR
- Does Thomas Precession violate angular momentum conservation?
- How Does a Clock Measure Time?
- Light Speed Travel and Causality
- Puzzling Question
- Can energy be converted into mass?
- A question about E=mc^2
- not to defend Phrak, but i have a related question...
- A question regarding length contraction
- length contraction v. time dilation
- an inverse relativity problem
- energy, heat and speed
- Why is the speed of light the same to any observer?
- Question on Effective Potential
- Zero reference
- stationary and moving clocks
- Does light have gravity?
- photons, mass, momentum
- If i had a micro black hole..
- momentum in the time direction
- My response to an anti-relativist
- t of t' and x of x' with respect to S
- Does GR say anything about solid angle deficit?
- gravity and EM
- Synchronised clocks
- ct dimension
- The Ehrenfest Paradox
- parabolic trig for Newtonian space-time?
- Question on SR
- A silly question ?
- "No-Interaction" Theorem
- discrete precursor of stress-energy tensor
- Lorentz invariance and General Coordinate transformations
- Basic math operations on 4-vectors
- is the universe bounded?
- A question on special relativity
- How old is my twin brother?
- twin paradox
- Why is gravitational mass the same as inertial mass?
- What is light?
- Does a black hole cause light to move faster?
- How to measure absolute velocity
- Michaelson Morely
- Blind man's Relativity
- non-maximally extended universes
- Long planet and Galileo thought experiment
- Magnetic Field Lines/Location in space
- amazing thought worth a look
- The meaning of conical singularity..
- The usage of ct instead of t
- Lorentz via rotation
- Looking for a word
- Mass question
- photon paths.
- Could i make this clear
- remote Frames of ref
- time dialation
- space is flat
- Lorentz Factor
- spherically symmetric metric in isotropic coordinates ???
- Events and how they are percieved.
- curved space JesseM
- Twin paradox and time dilation.
- Time Dialation analysis
- relativistic phase space
- the stress energy tensor again
- Atomic clocks & general relativity
- what is the motivation of twistor
- A bench-top test of special relativity ?
- "Relativity Revisited"
- speed of light question
- Lorentz Violating Field
- Trouton-Noble experiment
- What happens to the pythagorean theorem in a non-euclidean space?
- Inertial Reference Frame
- black hole decay
- How does an object "know" that it is in motion?
- Question about 3 momentum
- thought experiment
- Parallel path interaction
- time dilation analysis help please
- Constructive criticism please.
- 4-velocity, the "mass shell" and potential energy
- Accelerating twice
- photon mass destroyed?
- synchronised clocks anylsis help please?
- Limiting Speed
- wave equation in curved spacetime
- QM flux in curved spacetime
- Does relativity work...
- naked singularities
- A question about invariants
- faster than the speed of light
- Circular Orbits of a Black Hole
- Violation of the EP
- Definition of an Inertial Frame
- Time Dilation backfires
- The Gauss Bonnet Lagrangian and the conserved current
- Transform Mass in energy
- curved space/ spacetime
- Energy momentum tensor of a scalar field by varying the metric
- Another question about photon perspective, concerning entanglement
- SR paradox
- consistency of the speed of light
- GR and Dynamical Systems
- position of a ship in a new dimension
- GR explanation of Newtonian Phenomena
- empty space
- Twin paradox in an empty universe
- Two oposite beams and earth and rocket again
- two kerr black holes?
- Can galaxies recede from us at velocities greater than c?
- Do objects actually shrink?
- accelerating black hole
- Planck-Einstein Transformation of temperature
- line element of Schwarzschild
- Lie derivative and Riemann tensor
- Travelling to the Nearest Star and Time Dilation
- Question about a figure in relativity textbook
- Questions about gravity and curved space
- Motivation for tensors in GR
- opinion/discussion/advice on a simple thought experiment please
- From The Suns Core to The Corona?
- Local relativity
- A problem with light speed constancy
- Relativistic thermodynamics controversy?
- possible quantum implications of GR?
- de Sitter Universe
- Can gravity exist without mass?
- What experiments are lined up to test gravity
- Photon's perspective - we are one photon
- Inertial frames and Parity symmetry
- General Relativity and the Moon's orbit.
- Space Elasticy
- Observation of a black hole
- General relativity in 1+1 spacetime dimensions
- differentials - is this valid or just sloppy but right?
- is time, inside an event horizon, time-like or space-like?
- Combination of Michelson/Morley and Time Dilation
- am I moving
- Hypothetical spacecrafts traveling at light speed.
- Orbital Light Speed
- paticle accelerator in space ship help pls
- Synchronised Clocks
- A falling object
- Pervect's discussion re photon/light perspective/reference frame
- Newbie relativity question
- gamma in GR
- Another length contraction paradox
- who is moving
- Twins Visualized
- Is black hole entropy invariant?
- Calculating the travel time in relativistic travel
- Electron Velocity vs Field Strength?
- Force and acceleration
- Retarded time
- Relativistic wobble?
- Gyroscope experiment
- Does a relativistic rolling ball wobble?
- lorentz - dont get it
- GR and conservation of energy
- Gravitational flux in GR
- Why E=MC2?
- Wheeler v. Einstein
- gravitational wave frequency
- non-homogeneous; anisotropic
- particles travelling faster than the speed of light?
- OK FINE, magnetism is explained away by relativity
- Crazy one - photons and time
- photons stuck in an orbit
- Einstein's train - When+where does side observer see lightnings to the train rider?
- General Relativity as a non-Abelian gauge theory
- speed of gravity
- Horizontal Distortion
- Doppler Effects on Gravity
- Time Dilation a Constant? Space Contraction connection with Dark Energy?
- Why general relativity and quantum mechanics are incompatible?
- Object's Mass Increasing
- GPS and Sagnac effect.
- Ricci Scalar Problem
- relative velocity of third object
- Divide by zero
- alternate twin paradox
- Gravity and bending of light
- What is a null coordinate?
- Why c?
- Twins Paradox and acceleration
- Faraday's law of induction and special relativity
- photon kinetic energy
- Stumped about GR "contradiction"--help please
- Understanding Gravitation
- Sign convention in the space-time 4-vector
- again on twin paradox
- time dilation question
- A little geodesic help
- Aether attached to Earth?
- Confused about "Aether"
- M&M, Trouton-Noble, Disintegrating Particle, etc
- Rest Mass?
- Prove that 4 vector potential is really a 4 vector?
- Current Sagnac Theory?
- Can time contract?
- Questioning examples often used to introduce the basics of relativity
- energy
- Does gravity function as a lens, a prism or both?
- Does a photon curve space-time, i.e., produce a gravitational field?
- Gravity-Why not repulsive?
- Radial Free Fall Proper Time
- Need some help with relativity...
- GR and quaternions
- CERN, speed of light...
- derivation of relativistic acceleration and momentum
- GPS and relativity
- Einstein simultaneity: just a convention?
- What is Physical Significance of "Lorentz Transforms"?
- Particle speed on a relativistic wheel?
- Conservation Laws
- Relativity on spin particles
- Relativistically correct exression for Lorentz force
- Is is not that Simple? (about Lorentz transforms)...
- general relativity question
- lol--lol
- Special Relativity question (from non-physicist)
- Mass Dialation question
- RedShift-BlueShift Confusion?
- Scale vs. Balance
- Relative velocity and GPS
- Relativistic mass and space-time curvature
- Dingle's Dilemma again!!!
- Mathematics prerequisite to that of relativity
- (E,p)(E,-p) What pushes on a scale?
- attaining speed of light
- Gravity Probe B and 'frame dragging'
- History of special relativity
- Use of covariant derivative in general relativity.
- Twin (rod) paradox...
- newie relativity question: proper time vs. arc length?
- Pure twin paradox...
- What do i need to know to move on to the Relativity ?
- Gravitational Redshift
- F=ma at light speed
- gravity in R5?
- Field Shift
- Impure twin's paradox
- black hole question
- Is Lorentz transformation absolute
- Relativistic Doppler Effect notes
- On the speed of light, accelerate toward mass
- Confining a photon to form a black hole
- Gravity vs Diffraction in Troposphere of a Star
- gauge theories of gravity
- Lightwave moving towards/upwards curvature
- How can length contraction of a rod be measured?
- 2 body rotating system in GR
- how does Lorentz transformation manage to maintain the speed of light constant?
- Lorentz question II
- ?Strange? interpretation of Time-Dilation and it's implications
- Time stops at light speed?
- Defintion of Curvature
- Time and Relativity
- At what speeds does relativity become noticable?
- black hole...?
- What are the meaning of monopole character and dipole character?
- Singularity Semantics
- Zero Time, Infinite Space?
- What good is a gravity wave?
- length contraction and time dilaton
- How can we tell if a given tensor is a curvature tensor?
- Question on both Time Dilation and Lorentz Contraction
- Can You Travel Faster Than The Speed Of Light?
- Need a physicist's opinion
- Another twin paradox variation
- Expanding universe
- Criteria for Lorentzian Space or Region
- Reconciliation of Maxwell's Equations with Relativity
- Relativistic cyclotron frequency
- twin paradox
- Alpha Centauri lottery
- Everything travels at the speed-of-light ?
- Wouldn’t time dilation govern a speed limit?
- Time dilation explanation for gravity?
- 5d Relativity?
- SR motion, GR motion
- Absolute speed of light conundrum
- Light Speed
- Multiplet paradoxes...
- loss of simultaneity explained by classical physics
- What is Meant by Time & Space Being "Continuous"?
- "twins' paradox" and acceleration
- Relative to a black hole...
- How would the speed of light affect your mass?
- Speed Of Light
- Train Problem
- Curvature Scalar
- Description of magnetic field in black holes
- Bell's Spaceships Paradox explained.
- Time and speed of light problem
- Relativistic Optics
- Gravitational redshift and phase velocity
- basic thing with general relativity
- inverse twin paradox
- speed of light in a different medium
- Question on De Broglie
- Principle of equivalence
- Which clock is slower?
- Another impure twin paradox
- about basis vectors
- relativity
- Equation for time dilation.
- gravity and acceleration
- invariant "spacetime velocity"
- Does acceleration cause time dilation?
- Time slows at the speed of light
- GR Tutorial
- Black Holes For Civilians
- Universal expansion velocity SR or GR?
- Why do we have red shift and blue shift, and not only one?
- General Relativity Question
- Simple question on EM field
- Preferred Frames not in SR are used in Astrophysics
- Does this violate EP?
- Which is the densest star and how much does it bend light rays?
- Derivation of E = mc^2
- Plase Help Me!
- Acceleration and twins.
- Palatini form?
- Andromeda Paradox
- Why doesn't the universe expand on small scales?
- Behaviour of measuring rods...
- about the metric tensor
- redshift question
- perturbing the Schwarzschild metric
- Stupid Twins Question.
- Fields = mass?
- How do relativity explain elliptical orbits of planets?
- [SOLVED] light and time
- age of universe-speed of light
- simultaneity and frames
- Surface area of the earth
- Nasa
- experimental data for..
- a link to math
- Stupider Twins Question
- spacetime and em
- relitivistic rocket
- light and gravity
- Geometry of Minkowski space
- twins
- ON THE ELECTRODYNAMICS OF MOVING BODIES by A.EINSTEIN
- Are relativistic effects "real"?
- Symmetric Twin Paradox(?)
- please explain a little about general and special relativity
- the Michelson-Morley experiment
- vacuum solutions
- special relativity: twin paradox
- Tensor Manipulation
- special relativity treatment of gravity?
- absolute simultaneity with Einstein synchronized clocks?
- Gravity Wave
- can light have a phase velocity faster than c?
- Development of generalized metric
- Can information travel faster than light?
- Traversable Wormholes
- Simultaneity Problem
- In what direction does length contraction occur?
- What kind of math is needed to understand relativity
- actual and observed time dialation
- Čerenkov radiation
- Stupider-er Twins Question
- a strange paradox
- Is relativistic effect of length contraction physically "real"?
- Question about the rotating disc
- lengths and times relative to S' and S
- Flat uniform and equivalent
- Doppler-shift/hubbles-law implies big bang/universe age?
- Help me through a simple SR problem
- Absolute Time
- Clarification on the consistency of light speed
- anybody got a "light"
- E=mc2
- Does light have mass/weight
- div G_ab = 0
- Determined c in S v. Result of the Michelson_Morley Exp.
- Einstein's Last Thirty Years
- invarients for 4-vector quantites.
- Can objects 'fall faster than c' in a gravity field??
- Question on relative time.
- Is inertial mass of gas the same as its rest mass
- special relativity problem
- movement and spacetime
- Geodesics and stretched strings
- Doppler shift clarification
- question about greene's "the fabric of the cosmos"
- Time and Tempature question
- Question on Time Dilation Experiment
- Speed of gravity - simple question
- Andromeda paradox
- Special Theory and String Theory.
- Acceleration or gravitational time dilation the same?
- Gravity AND curved space-time bending light
- Drawing Penrose diagram figures
- forumulation of field equations
- Accelerating universe != conservation of energy?
- Black hole
- Measure of Distance to Stars
- Charged black hole
- question on Einstein's Simple derivation of Lorentz Transformation.
- Relativistic Star Brightness
- Gravitons or Warped Space-Time?
- Motion of Spectral signature
- Why not fewer visible stars in far away galaxies?
- Gravitational Time Dialation
- Absolute Zero and time travel?
- the very significant and positive result of the MM Exp
- Just a “simple” question about the speed of light and c^2.
- Is this tensor operation valid?
- Help with relativity [relativistic rocket]
- Temperature and special relativity
- faster than light
- please send me link
- time dilation and the pioneer spacecraft
- tachyons
- Wave Function in Lorent tranform
- Worldline of photon in comoving coordinates.
- radial change
- Michaelson Morley experiment.
- Energy-momentum tensor for a scalar field (sign problem!)
- Light
- Curved space-time and dimensions
- Pushing in the wrong direction
- Who coined the term "relativistic mass"
- New Relativity FAQ
- Group theory and Spacetime symmetries
- rest length in general relativity
- Why Does light have a speed limit.?
- Matter tells matter how to move
- The General "Principle" of Relativity
- Speed of light - with observer experiencing gravity
- Eddington - GR as description
- I would like an answer please.
- Velocity
- Is motion relative to the size of an object
- Warped space vs gravitrons
- Zz please read this!
- Classical Pendulum Paradox
- Space & time
- On The Ether Concept In Physics
- Question about Acceleration and Relativity
- Possible Analogy for Objects Moving at C
- relative moving charge
- why does light move at...
- On GR and Interstellar exploration
- Questions about acceleration in SR
- Time dilation
- Quick Question about Time Dilation
- geodesics in metric geometry and affine
- Black hole physics ...
- negative clock reading
- Coordinate transformation and choice of a suitable coordinate system.
- Thought On Gravity
- I would like an answer please.
- Is there a gravitational equivalent to magnetism?
- In this scenario is faster then light speed possible?
- A more interesting Pendulum Paradox
- 3 and 4 velocity and acceleration
- little problem with group velocity
- Does the expansion of Space require continuous energy??
- What properties of space determine gravity velocity?
- homothetic vector fields?
- LHC safety case
- Light speed in relation to the size of the universe
- Gravitation ?
- Time Dilation
- a weird "spherically symmetric" metric
- Light Tag
- Photon acceleration
- space medium or infinity
- Time Distortion
- Schwarzschild curvature
- simultaneity and a thought experiment
- Why can't we go faster than 300,000 km/s?
- Help with McMahon's Relativity
- Is Matter Made Up of Photons?
- what is the meaning of topological black holes?
- How Can V Draw Space Time Curve
- Space-like intervals
- Bounded by spacetime
- Advance of perihelion
- What would you see.
- Whom do we consider as moving in special theory of relativity?
- Analogue of Lorentz transformation in General Relativity.
- Conservation law using Killing vector
- black hole question.
- A Thought Experiment with Time Dilation
- Angular distance in SR
- Another question about speed of light
- Distance changes?
- Time-reverse symmetry of the principle of relativity
- A universe without light
- Is the speed of light a constant
- Does the metric really represent "intrinsic" spacetime in plain English?
- On Petrov classification
- Noether's theorem
- Question about Light
- Einstein's Field Equations
- Frequency shift of light between observers in Schwarzschild space-time
- Would Gravity Waves Show Doppler Shift?
- Dumb question on Unruh effect
- Rotation and Gravity
- How often does mass effect space
- Confused about gravitons
- about geometrized units
- Lorentz and Poincare groups
- A question on why Special Relativity holds
- (special) relativistic effects made clear in animation
- Lightman et al Question 3.10
- Definition of Kronecker delta
- Lightman et al Problem 3.24
- What doesn't have gravitational mass?
- a question about the relativity
- Whats NASA saying?
- extinction phenomena.
- why can't gravity accelerate an object past c?
- Time Dialation Equation
- What exactly is stopping us from unifying GR and quantum mechanics?
- Can mass go faster than the speed of light?
- photon and mass questions
- Stress energy tensor of a rotating hoop
- Trivial question about gravity affecting itself
- the problem of simultaneity
- on the noton of reference frames force and acceleration
- Time dilation and distances
- gravitational force = inertial mass
- tensor infinities
- Proper acceleration
- Spinning at the speed of light?
- MTW questions
- Determination of Riemann curvature tensor from tidal forces
- Einstein's resolution of the "clock paradox"
- Identifications between the model and the real world
- fictitious force
- SR's Length Contraction and Time Dilation
- speed of gravity and Baez's article
- photon's mass
- A doubt in simultaneity
- Question about time.
- Intriguing Question
- Orbiting Time Dilation
- speed of C
- round trip (two way) speed of light
- About Schwarzschild Solution
- Expanding universe & relativity
- energy in a human question
- Charged particle at relativistic velocity
- Photons that orbit at the event horizon.
- Challenging problem in GR
- Universal Reference point in time
- High frequency gamma ray.
- Space Time Fabric
- Conservation of Energy
- Requesting Simple Examples
- Does space expansion theory obey relativity laws??
- special relativity and apparent, actual and synchronized positions
- Have the gravity waves been detected from the big bang?
- Why does light not pass through voids within atoms??
- E=mc˛ redux
- Relativistic Kinetic Energy
- frequency change of a photon falling to earth
- precession angle per orbit of perhelion precession mercury
- about the accelerating spaceship
- Gravity in relation to mass & energy
- Question about Slowing light
- quick question about light
- Frames of Reference
- Length contraction compression and Schwarzschild radius
- Bouncing light question faster than c?
- some good (and entertaining) Yale intro lectures on SR
- Pole and Barn paradox - close the doors for good!
- Accelerations at various distances.
- 3 space dimensions
- Question about exhaust velocity and terminal velocity
- Can one diagonalize the Kerr metric?
- Time dilation earth
- matter travelling faster then light inside a black hole
- Gravitational time dilation from two or four bodies
- Speed of Light
- A super n00b gravity question
- Question about "pressure" in GR
- Heavy question about nothing
- another Schwarzschild question
- Anybody know how far off relativity becomes at large velocities and small distances?
- crossing the event horizon of a black hole
- confused
- Silly question
- Backscattering of light at a black hole
- Third postulate of special relativity?
- SR and Light Clocks - Confused!
- Is there a good introduction to Hawking Radiation?
- Define Electromagnetic Spacetime
- Derivation of Gamma
- How is velocity defined?
- If the speed of light were zero
- Space dilation in GR
- geometric spacetime split
- Shapiro Delay
- typo in d'Inverno?
- Slicing the spacetime "loaf"
- Another speed of light question
- falling into a black hole
- time dialation and ageing
- General physics questions (experts)
- Einstein hole argument
- Kerr metric...
- Do Closed Timelike Curves Exist?
- about spacetime curvature
- Thought experiment (SR)
- nonstandard relativistic dynamics
- Coming to terms with the velocity addition formula
- Kepler & Einstein
- Simultaneity - the equation
- ds notation for the metric
- Mass>Energy-Gravity?
- Newbie vs Einstein
- Why is a 3rd party important
- watching young's double slit experiment in moving frame
- Photonic computer
- Time dilation also for accelarated motion?
- Gravitational Theory, Don´t grasp it.
- tossing a clock
- velocity and proper acceleration
- Accelerated coordinate systems
- Revised Twin Paradox
- "Behavior of light accelerating"
- two questions
- Another time dilation question
- two easy questions
- Michelson-Morley experiment proves nothing
- How two clocks can each run slow in the other's reference frame
- Derivative of metric tensor with respect to itself
- Meaning of coordinates in GR
- More Twins Silliness
- Bends in Space-Time vs Invariance
- warped space
- Lagrangian for dust/perfect fluid
- time travel applications
- a question about the speed of light puzzles me
- Speed of Light
- elevator metric
- Equilibrium
- 'Faster than Light' Travel
- Matrix Representation of Tensors?
- Covariance and Contravariance
- Speed of civilisation development
- Does Light Have Mass?
- Rotating a laser beam faster than light?
- Effect of acceleration on space-time fabric
- Origin of spatial metric
- Relative velocity.
- Einstein's equation ....
- Bondi k and everyday clock synchronization
- Does light bend light?
- Robertson-Walker metric in higher dimensions (and problematic Riemann tensor)
- light speed relative to accelerating & const vel source
- Normalization of a delta function in curved spacetime
- Basic Energy-Momentum Issue
- Riemann curvature tensor as second derivative of the metric
- Conservation of Energy
- Does massless particles experience gravity
- massless particles
- synchronization gauge
- what happens to matter inside a black hole?
- Stupid Question
- about the Rindler metric
- What Are Closed Timelike Curves?
- What happens when you apply a force in space over infinite time?
- Does charge change with velocity?
- Relativity, speed of light and stuff...
- Force-free motion from a busted Lagrangian
- An experiment.
- Uniqueness of solutions to EFE?
- Principle of relativity and energy?
- space-time
- Gravitational waves adn Black holes frequency
- Gravity and charge question
- GPS and relativity.
- Mass
- What has the speed of light got to do with time travel?
- Metric Tensor question
- Proving that the scalar product is invariant
- Mass dilation determination
- Gravitational potential from QM-like phase
- Fitzgerald -Lorentz contraction
- Riding on a light beam....
- Can gravity creating by energy?
- A question regarding relativity and information transport
- light cones in faster than light travel
- time dilation limit? (how much does time dilate at "c")
- Relativity equation - calculating the algebraic limit
- Lorenz contraction help please.
- does superposition hold for relativistic particles?
- Lorentz transformation, Einstein transformation,Lorentz-Einstein transformation
- equal and opposite electric fields?
- Relativity
- Special relativity simulation issue
- Faster than light?
- Derivation of the Special Theory
- Question on Twin Paradox
- Interval
- tidal forces and geodesic deviation: a principle question
- Relativity and Quantum's multy universes
- translating and rotating rod
- how possible is time travel?
- matter-antimatter ship in GR clock paradox - fuel consumption
- local lorentz frame
- scalar invariance across inertial and non-inertial frames
- paradox of gravitational potential energy
- Strong and weak gravitational Fields
- break the upper limit: 2x speed of light?
- Relative Motion and Time Dependance on Velocity of Light
- my first doubt about light
- If I was a photon....
- Mass, Gravity, Spacetime and everything..
- Limit to a gravitational field?
- Light Clocks
- Alcubierre Drive?
- Who gets there first? Speed of light.
- Proton mass-energy
- Mini Black Hole Loose on Earth, eek!
- Acceleration up to lightspeed (From the inside)
- Tangential Velocity, Frames, and the Speed of Light
- Minkowski spacetime
- Is there a limit on real inertial frames?
- Wien's law in relativistic frame..
- On Length contraction and FTL
- Energy calculation in STR
- difficulty with imagine ( MM experiment)
- continuity equation from Stress-Energy tensor
- Basic doubt about aether
- Apparent distances as seen from within Schwarzschild solution
- relativistic length, 2 viewpoints
- What happens before crossing the Event Horizon
- So is energy relative?
- Why does gravity not end at the event horizon?
- SR dynamics
- newtonian limit FRW
- Picturing reference frames
- Exceeding the speed of light.
- four velocity/four force
- proper acceleration
- Special Relativity and the Lagrangian
- meaning of four-velocity
- relativity 101
- Equivalence of Time Dilation
- A small question relating LHC
- Michelson inteferometer
- twin paradox
- Event Horizon and Light Exit Cone Question
- Ive been reading ON THE ELECTRODYNAMICS ...
- Our Undiscovered Universe?
- lorentz transformation in non-inertial frame
- transformations
- formula for the acceleration felt by an accelerating object?
- Travelling near the speed of light
- time dilation related questions
- Acceleration and Curvature of space-time
- wikipedia articles
- paradoxes if instantaneous signals
- Relative aging equation
- Could you pull someone out of a black hole?
- millenium falcon firing a laser
- space-time disturbance
- faster than light
- Woodward Effect? Explain, please?
- What happens to the energy?
- Quantum Field Theory - Charged Field
- The Reacceleration of Light
- Long Bar and the Speed of Light
- What determines who feels the time dilation?
- The upward force in General Relativity
- f.t.l. question
- how is general relativity cast as a gauge theory?
- Where did General Relativity Come From
- Proper Time
- How does light travel so fast?
- Basic GR
- Gravity only illusion due to expansion of universe?
- Killing fields and black holes
- Breakedown of common sense and inertial ccordinate systems
- Calculation of the black hole horizon's surface
- Length contraction depends on the distance of the object?
- Is space fabric or fluid?
- Relativistic Rod and Hole
- covariant vs. contravariant time component...
- Twin paradox negation.
- reletivistic particle decay
- Speed of light c = 0 Km/s. Not 300K, but a big, fat zero Km/sec!!!
- Faster than light?
- relativistic collision
- Metric tensor
- inertial reference frame
- Lorentz-FitzGerald Contraction
- Weight
- Why, why, why, Mr. Anderson, WHY?!
- How to calculate relative velocity in SR
- Optical effects of special relativity
- Time Dilation Question - TY
- Gravity time dilation in the Earth?
- partial derivative as a vector
- The existence of Infinity.
- Einstein's real importance to relativity theory
- sticky for beginners
- The one-form basis and contraction
- How does light slow in the presence of gravity?
- Time Dilation/Proper Time Question
- Christoffel symbols
- Ether hypothesis and M/M Experiment not needed...
- A paradox of my own