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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.
I Do Fundamental Physical Constants Truly Remain Constant Over Time?
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B What makes the Navier Stokes equation so difficult?
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I Is it possible to use the vacuum to launch a rocket?
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B Time it takes to convert one form of energy to another?
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Which is the best conductor? Silver or gold? Why?
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B Are black holes infinitely dense?
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B Gravitational Wave Communication System
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B What makes a material an insulator?
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I 2 sign questions related to the wave equation
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B Unusual question about video experiment on YouTube
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I Understanding of gravity in the Middle Ages
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B Direction of the force on a conductor in a solenoid
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B Reason for black gel pen refills leaking in winter
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B The Hunt for Red October's Catepillar
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B Overview of identification methods
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B What is the Effort in a Hand Holding a Tray?
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I Is it physically possible to climb up a building like this?
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I If a rock fell 20,000 meters to Earth Question
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B A Question about Charging by Conduction
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I Splitting force vectors into components
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I Does the Poisson Equation Have a Unique Solution with Mixed Boundary Conditions?
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A Two-Body-Problem with Changing Mass
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B Can Antimatter-Matter Be Used as Rocket Fuel?
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B How to calculate the distance that a bungee will extend....
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B Exponential decay convolved with Gaussian
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I Can a bicycle be tipped over by only applying rear brake?
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I Ferrite Rod Antenna: Understanding How It Works
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I Divergence of ##\frac {1} {r^2} \hat r##
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B Energy and Matter: General Relativity Explained
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I Exploring Dimensions in Physics: Can We Apply Laws in Different Dimensions?
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B Can we build a microscope to see an atom?
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B Will we be able to visit other solar systems anytime soon?
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I Matter density on the bottom of a liquid container vs hanging in the middle of it
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Application of Conformal Mapping in Physics
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A Anamolous Aerodynamic behaviour of small spheres?
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I How to write measured value with error
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B How does calculus relate to dimensions?
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I Could tide-powered buoyancy be a viable source of energy?
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I Force-couple system equivalence: 3 moment equations
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B Would it be possible to make something float?
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I Having a hard time remembering what this equation is
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I Check invariance under time-reversal?
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B Forces between two immovable objects
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I How Does Helmholtz Free Energy Change During Constant Temperature and Volume?
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B Understanding Rates of Decay in Simple Terms
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A Why Do UV Photoabsorption Cross Sections Show a Kink at 10-100 Angstrom?
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B Knowing if the elevator is moving or not
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I Calculate Pressure Needed to Move Grease
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I What is the difference between Mach cone and shock wave in aerodynamics?
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B Physics Behind Weebles: Can You Build One?
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B Trying to get a basic understanding of the 4 key forces?
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B I understand time a little better
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I Probability & Time: Is There a Connection?
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A Calculating Vibration Modes of a Cylinder (Drum Shell)?
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B Rates of Change and Multiple Dimensions
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I Unclear on interpretation of equation - oscillation maybe?
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I Incoherent Waves: Interference Possible?
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B Biggest Bosenova: Milligram Range Feasible?
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A Zeros of the partition function (Yang-Lee and Fisher zeros)
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B Do bodies lose mass due to gravity?
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B Exploring Echoes of Electromagnetic Wave Lengths
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B A Question about Energy conversion....
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I Force That Binds Atoms: H2, Electromagnetic Force?
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B What is the reason for the attraction force of a bubble?
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B Are the Laws of Physics consistant and universal?
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I Combination sink/source in one object
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B Calculate relative amounts of energy?
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I Confusion between adiabatic and energy
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I Exploring Emergence: Examples, Theory, and Experiments for a School Project
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I Error in the average of same-value measures
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I A question about a Feynman Diagram
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B F=ma -- True or an Illusion....
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I Rope ladder -- How to be able to cast it long distances?
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Insights All about Earth's Gravity - Comments
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B Can energy change physical laws?
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I In PET scanners, why is a cyclotron used to make positrons?
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B How do you calculate how much force is applied to a thrown bal
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I Discovering the Science Behind Sucking Up Spaghetti | Ray Vickson
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I Can You Really Build a Cyclotron for $17?
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I Hamiltonian of a Physical Theory: Lagrangian vs Transformation
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I Typographical question: the section sign
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I Finding Real and Imaginary Parts of the complex wave number
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I Why is the 'TS term' included in the expression for Gibbs free energy?
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I What causes disturbance on my phone camera?
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A Why Can't a Lower Energy Photon Remain After Pair Production?
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I Is Energy Partially Spent on State Change Below 100°C?
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I Exploring the Limits of Density: Is There an Absolute Maximum?
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A AC transport data query (using a PPMS system)
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I How can an object tip and slip at the same time?
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I Is it possible for airplane radars to scan minefields?
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I Experimentally measure gravitational force
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B Postulates and pseudoscientific hypothesis difference?
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B Are the Sun's rays reaching us always parallel?
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I Why there's No Unified Theory ?
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B Rutherford's Gold Foil Alpha Particle Interactions
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I How 'big' is the present moment in terms of time?
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I Overview of General Fresnel Equations + Complex IORs
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I Where is a contact force labeled on a diagram of a pivoted beam?
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I Centre of Gravity: How Can This Be Possible?
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B Discovering the Correct Rocket Mass Ratio for Beginners
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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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