Special and General Relativity Forum

Graduate Anti-de Sitter spacetime metric and its geodesics

High School Twin Paradox: Time & Speed Explained

Graduate Can Information Be Preserved on Closed Timelike Curves?

Graduate Correct phrasing / use of vocabulary for SR

Graduate Does Bell's Paradox Suggest String Shouldn't Break Due to Length Contraction?

Graduate How Do Light Clocks Illustrate Time Dilation and Length Contraction?

Graduate Why does length contraction only occur parallel to the direction of motion?

Undergrad Speed of light constant in NON-vacuum?

Graduate I have been reading a book on hyperspace and again the author has gone

Graduate Why does Einstein's 1905 SR paper contain Zero citations?

Graduate Confused about some aspects of GR

Graduate Relative difference in laws of electrodynamics

Graduate Physics & Cosmology: Questions about Gravity & Orbital Motion

Undergrad Was Ruđer Bošković the first one?

Graduate Question about Einstein inserting the cosmological constant

Graduate What's being curved, when mass bends the spacetime continuum?

Graduate Shrinking event horizon to point singularity

Graduate Does potential energy change mass

Graduate Questions about the accelerating universe

Undergrad Thought experiment about time dilation

Graduate I have a spacecraft that can trave to Alpha Centauri in 1 week

Graduate Local flat space and the Riemann tensor

Undergrad What happens to the shape of an accelerating mass

Graduate Eternal black hole Hawking process

Graduate Repeat of Hafele-Keating Experiment?

Graduate Existence of gravitational energy

Graduate Tensors and vector derivatives

Undergrad Einsteins Theory on Relativity

Undergrad Hyperbolic Geometry in special relativity

Graduate What is the FTL drive model that is not the Alcubierre?

Graduate Intuition for General/Special Relativity theorems without experiments

Graduate Velocities as seen by different observers.

Undergrad Understanding Light Wave Propagation

Graduate Does time dilation effect rate of isotope decay?

Graduate Mass Increase in SR: Clarification of Popular Belief

Graduate Light Cone Distributions: Review by Eric Poisson, Ian Vega and Adam Pound

Graduate Mass and energy when traveling at near the speed of light

Graduate Another way to get energy equivalent of a mass

Graduate Doppler effect and invariability of C

Graduate Gravitational Waves & Neutron Stars/Black Holes: Observed Velocity Decrease

Graduate Passage from the book relativity i am not able to understand

Undergrad Calculating the Distance Traveled by Light: Myth or Reality?

Undergrad Time Dilation with objects at low speeds

Graduate Schwarzschild metric and spherical symmetry

Undergrad Trying to Understand Light in Motion: A Frustrating Puzzle

Graduate Can light act like an object in motion and stand still in an ideal environment?

Graduate Book for Special Relativity that uses Tensors

Graduate Outgoing Eddington-Finkelstein coordinates

Undergrad Calculating Maximum Revs/Sec w/ Speed c & Circumference of Disk

Graduate Mass Increase When Light Speed Increases: Einstein's Theory

Graduate Form of Lorentz Transformation Using West-Coast Metric

Graduate Can special relativity be violated by an electron in a television tube?

Graduate Is energy conservation necessary?

Graduate Unruh effect and lessons regarding reality

Graduate Hypothetical implication of Lorentz contraction

Graduate Why Does Frame Choice Matter in Velocity Addition Problems?

Graduate Question about SR in Griffiths

Undergrad What happens if C is faster than the speed of light?

Graduate Is the Travel Time to Reach the Speed of Light Really Only 2 Years?

Graduate Is cosmic muon lifetime extension a valid test of relativity?

Graduate Are the directions of electric fields lines affected by Gravity?

Graduate Gravitational Wave Local Energy: Not Gauge Invariant?

Graduate Black Holes: Event Horizon, Singularity & Information Loss

Graduate Need help reproducing geodesic DE from a paper

Graduate Einstein's Theory of Relativity: Why Planets Orbit Quicker Near the Sun

Graduate Quick Question about the Christoffel Symbol of the Second Kind

Graduate Monkey and Hunter Problem - General Relativity?

Graduate Proper Acceleration and Christoffel Symbols

Graduate Rohrlich's derivation of E=mc2 wrong?

Undergrad What is Lorentz transformation?

Graduate Faster than light relative speeds (I know it's impossible)

Graduate Locally inertial coordinates on geodesics

Graduate Is Papapetrou line element the same as cylindrical coordinates?

Graduate Justification of length contraction in light-clock presentation

Graduate SR and speed of light in matter

Graduate Gravitomagnetism: Why isn't mass-current covariant?

Undergrad Who Ages Faster in the Twin Paradox?

Graduate Initial Acceleration of Photons

Graduate Will we measure the velocity c?

Graduate What are the consequences of violating (or almost) speed c

Graduate How Can a Magnetic Field Generate an Electric Field Without Experiencing Time?

Undergrad Does Time Dilation Occur When Orbiting Around a Planet?

Graduate Problem with Understanding Dimensions

Graduate Spin Density and Non-symmetric Stress-Energy Tensor

Graduate Is length contraction direction independent?

Graduate Top Free Mathematica Packages for Calculating GR Tensors and Derivatives

Undergrad Does Relativistic Speed Increase Gravity Pull?

Graduate Travelling close to the speed of light

Graduate Time Dilation: Self-Consistency Problem Explained

Undergrad Everything attracts everything else; F = GMm/r^2. If two objects are

Graduate Observing a Galaxy in a New Way: 100,000 Lightyears Across

Graduate Gravity waves, how big are they?

Graduate Do all four-vectors live in a tangent space?

Undergrad Time Dilation Vs. Length Contraction

Graduate What would happen if the speed of light was 1000 times greater?

Undergrad Formula for light deflection in elevator

Graduate Synge's World Function: Explained & Needed

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Graduate Causality Violation in Extended Newton's Cradle?

Graduate Definition of Frame of Reference

Graduate Can Spaceship A Destroy Spaceship B at 99.99% the Speed of Light?