Special and General Relativity Forum

Graduate Closing Door Paradox in SR Theory

Graduate Time Dilation: 10.5B Years at Light Speed?

Graduate Newtonian Limit of GR: Experimentally Constraining k in the Einstein Equation

Graduate Constant Acceleration seen in an inertial frame

Graduate Where Do Closed Timelike Curves Go?

Graduate Derivation of the Teukolsky Equation

Graduate Lorentz Transform in Non-Minkowski Spaces

Graduate Derivation of Lorentz Transformation

Graduate 2 Masses accelerating to eachother

Graduate How Does Special Relativity Explain the Michelson-Morley Experiment Results?

High School Is Light Speed Fixed? - Physics for the Lay Person

High School Why is the speed of light limited in physics?

High School My 9-year-old son has a physics questions that I couldn't answer

Graduate Which solutions of GR are experimentally tested

Graduate Linearized gravity / Linearized Einstein Field Equations / GEM

Graduate Considering Relative Simultaneity - Relying on clocks instead of observers

Graduate How do you visualize four dimensions with time as the fourth?

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Graduate Scalar Gravitational Theory with Variable Rest Mass

Graduate Do Cosmological Assumptions Affect Conservation Laws?

Graduate Tidal Effects of Non-Uniform Gravitational Fields in Free-falling Coaches

Undergrad Rotational kinetic energy formula in special relativity

Undergrad Why does light slow down in mediums like water?

Graduate Topology of closed timelike curves (CTC)

Graduate Twin paradox: why don't both observers agree on elapsed times?

Graduate Could a moving object become a black hole?

Graduate Why is the metric tensor covariantly constant?

Graduate Topology outside vs inside black hole

Graduate Speed of light in a medium and Lorentz transformation algebra

Graduate Did Einstein's variable speed of light concept predict frequency-dependent delays?

Graduate Does a photon slow down when absorbed?

Undergrad Can somebody read this and tell me the flaw in the argument?

Graduate Does Time Slow Down Near a Black Hole?

High School Time Dilation: If You Go to Space, What Happens to Time?

Graduate Is the speed of light constant?

Graduate What happens to kinetic energy in the case of a photon?

Graduate Could photons emitted by high velocity electrons have a specific emission angle?

Graduate Slowing Down a Photon - Does It Make Sense?

Graduate Why does a 4-vector need to transform under Lorentz transformations?

Graduate Calculating Black Hole Gravity: Velocity > Light Speed?

Graduate Do Photons Have Infinite Energy at Light Speed?

Undergrad Gravity/conservation of energy?

Graduate Question on Curvature of Space

Graduate Why EFE Satisfy Empty Space in 2-3 vs 4-D+ Dimensions

Graduate Brightness detected based on direction of travel relative to source

Graduate Why use a torsion-free metric-compatible connection in general relativity

Graduate Modelling Einstein's Thought Experiments (Trains + Mirrors)

Graduate Why is synchronizing clocks important?

Graduate Crackpot argument on Physicsforums gets published?

Graduate How Does Acceleration Relate to General Relativity and Spacetime Curvature?

Graduate Why Does Hamilton's Function Equal Zero in Relativistic Lagrangian?

Graduate Is the Speed of Light Truly Constant in a Vacuum?

Graduate What does the relativistic mass limit as u approaches c mean?

Graduate Is a frame at rest near a massive object inertial?

Undergrad Looking for complete explanation of logic behind relativity

Undergrad Einstein's papers translated to english?

Graduate Can Lorentz Contraction Exceed Light Speed?

Graduate Relativity, the flow of time and speed

Undergrad Does Hubble's Law violate special relativity?

Graduate Can Two Black Holes Merge and Reverse into Regular Matter?

Undergrad A rocket can't travel faster than the speed of light

Graduate Can you see future events inside a black hole's event horizon?

Graduate Why does boosting the 4-potential give wrong electric field?

Graduate A question with the readings of synchronized clocks

Graduate Special Relativity, Existence, and Big Bang

Graduate Why does de Broglie's equation give infinite wavelength for photons?

Graduate Does motion through space reduce motion through time at constant speed c?

Graduate Can a Particle Reach Light Speed at r=3M in a Schwarzschild Black Hole Orbit?

Graduate What does curvature of spacetime really mean?

Graduate Wormholes, parallel universes, negative mass

Graduate Lorentz transformation active or passive？

Graduate Do Standing Waves Exist in General Relativity?

Graduate Paper discussing the mathematics of relativity

Graduate Invariance of combinations of physical quantities

Graduate Maxwell's equations in higher dimensions.

Undergrad Speed's influence on space time

Graduate Is time dilation in SR real or just apparent?

Graduate Does a gravitational field have mass?

Graduate Limit to strength of electron magnetic field

Graduate Galileo's experiment and Equivalence Principle

Graduate What Happens to Baseball When Light Speed is Just 88 MPH?

Graduate Relativistic gas definition and thermodynamics in rotating galaxies

Graduate Twin Paradox: Simplifying Physics for Age Difference Explanation

Graduate Time dilation, length contraction

Graduate DEC with E/M and scalar fields

Graduate Chasing a Beam of Light: Understanding Special Relativity's Thought Experiment

Graduate Why does the faster particle decay slower if both frames see it moving?

Graduate Why Do Sound Signals Appear Simultaneous in Einstein's Train Thought Experiment?

Undergrad Orbiting the gravitational equilibrium point between massive objects

Graduate Speed of Light and the Causality Problem

Graduate What convervation law is required by the Lorentz Transformations

Graduate Flat-space picture of gravity vs. General Relativity

Undergrad Fizeau, 1851, drag coefficinet

Graduate Einstein's train thought experiment and relativity of simultaneity

Graduate Research on general relativity

Graduate What exactly are manifolds?

Graduate Frame dragging effects on speed of light

Undergrad Does kinetic energy vary by frame of reference?

Graduate Total energy/mass in stationary GR

Graduate Why the non-relativistic Doppler formula fails for light