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Participate in expert physics discussion. Discussion on the nature and properties of matter and energy. This area is for topics that don't fit the other categories. Mainstream physics only.
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Insights How to Avoid Breaking Physics With Your “What If” Question
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List of credible physics journals
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Insights How to Better Define Information in Physics - Comments
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Physics FAQs: All Your Questions Answered
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I Mirror reflection illusion
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B How do I keep my room cool when my housemate wants the heating on?
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B Liquid Flow Calculation out of a pressurized tank
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I Questions About Reciprocal Lattice Edge Length
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B Explanations about Kardashev type 1 civilizations
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I Phase Transition in a Pure Water System
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I Trying to identify a weird metal found on a beach
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B "Accelerations" as higher order derivatives
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I Named unit for momentum
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I CP violation, Tunnelling effect, and Cherenkov radiation
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I Does the use of microwave communication heat water particles?
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I Universal Gravity without Shell Theorem
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A Frequency Domain and pixel size
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B Looking for info on old, unlabeled Geissler tubes
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I Volume of momentum space of an ideal gas
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I Besides magnetic monopoles, what else doesn’t exist?
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I Vibration in jack: up and down movement
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B Is it possible to calculate how much force is exerted on the ground and shoe midsole by your body while you run?
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I Is Geometrical Optics Essential for a Deeper Understanding of Light?
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B Quasistatic condition for a process involving a piston in a cylinder
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B Why are the relative fluctuations of intensive properties so small?
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B How does output voltage of an electric guitar work?
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A Electromagnetic Skrymion Created
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I Why does my ceiling glow in the dark?
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Insights Brownian Motions and Quantifying Randomness in Physical Systems
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I Container in an MRI room
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I Hysteresis of a Compressed Solid
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B Wi-Fi Interference: How Microwaves Can Affect Your Wireless Connection
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B Dimensional analysis peculiarity
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B Question about sig figs and rounding: How to handle when there are 2 parts to the problem?
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I Magnetic Resonance physics question: RF pulse role and 'in-phase'
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I Why is the speed of light the same everywhere in the Universe?
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A Bruker TopSpin import function in pulse program
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B Energy production that converts Hydrogen to Iron?
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A Free carrier density and the electron momentum relaxation time
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A What materials, if any, are transparent to Long Wave IR?
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B Matter/Anti-Matter in a Vacuum
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B Trying to understand orbiting objects in space
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I Popular future physics beliefs that are completely wrong?
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I Decorrelation steps in Wolff algorithm
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I Pressure builds on its own inside this water tank?
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I Fiction Writer with question for research physicists - Looking for opinions and experiences with peer-reviewed publishing
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I Need to identify a physicist from a documentary on TV some years ago
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I Stable solutions to simplified 2- and 3-body problems?
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B What will be the reading of this vernier calliper?
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B Any examples of naturally occurring holograms?
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I Why can't we photograph magnetic lines of force emitted by planetary and beyond objects (like we can for the Sun)?
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I Can anyone tell me what these formulas in electromagnetism are called?
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I How can concentration gradient field come into existence immediately?
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I Increasing tone while mixing sugar in water
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B List of Verdet Constants?
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B How Does a Vacuum Affect Magnetic Fields?
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I Gravitational analog of electromagnetic force
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I Does Organic Matter Experience Gravity on the Moon?
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I Researchers find experimental evidence for a graviton-like particle
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I How to Calculate electron temperature of Arc Plasma?
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B Could you use the Moon to reflect sunlight onto a solar sail?
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I Discussion about least squares method
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B Does energy exist?
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B Calculating vacuum -- These numbers do not make sense
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I Replacing the Measurement standards (SI units)
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I What drives osmosis? (Statistics or Dynamics?)
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I Planck's Constant times the speed of light
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B How is a magnetic field formed in a space surrounded by one pole?
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B Why is My Homemade Cloud Chamber Not Working?
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A Relation between Rosenbluth Potentials and Spitzer Resistivity
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A How does phase of merging sines affect overall periodic tones?
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B Interactive visualization of the Hopf fibration
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B Too much energy -- thought experiment
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I Density fluctuations and the color of the sky
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B Circular motion as a result of the Lorentz force
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I Any alternatives to Tracker from physlets?
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B Question about the nature of an implosion of a vacuum chamber
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I Why was a HAM radio license required to operate early lasers?
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I NASA is seeking a faster, cheaper way to bring Mars samples to Earth
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I Biot Savart law gives us magnetic field strength or magnetic flux density?
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I Why charge density of moving dipole is dependent on time?
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B I have a question about energy & ignoring friction losses
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I What Causes the Einstein - de Haas Effect in Iron Rods?
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I Effects of the centre of gravity on aircraft's stability
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B Mean Free Path And Ball Bearings In A Box
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B I have a question regarding temperature and the kinetic energy of molecules
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B What ever happened to Classical Unified Field Theory?
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B Can Earth or any spherical object in space act as a particle collider?
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Physics equations with the mathematical constant Phi?
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I Understanding Ewald's sphere in the context of X-Ray diffraction
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B Exploring the equivalences between mass, time and length
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I How long would a tuning fork vibrate in vacuum?
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A From Nyquist plot to real conductivity spectra (sigma)
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I Can the 3D Ising model be considered solved?
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B What is currently known about fields other than gravitation?
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I Gravitation In Higher Dimensions
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I Single-Slit Diffraction -- Deriving the relation for the minima
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I Is "scalar wave" a legitimate term?
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B Speed of light and Euler's constant
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A Can someone explain this statement on luminous transmittance?
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I What happens when an explosion occurs on the surface of the moon?
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B Are there any unsolved physics problems?
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I Why is not possible to store electric energy from a Lightning?
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B How would physics change if Planet 9 were a primordial black hole?
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Physics is the scientific study of the fundamental principles governing the behavior of matter and energy in the universe. It explores the nature of space, time, motion, forces, and the interactions between particles and fields.

Physicists seek to formulate laws and theories that describe the fundamental forces shaping the cosmos, from the microscopic world of subatomic particles to the vastness of galaxies. Divided into classical and modern physics, the discipline encompasses mechanics, electromagnetism, thermodynamics, quantum mechanics, and relativity.

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