Special and General Relativity Forum

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Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
High School What is a Clock? Syncing Technologies Explained
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Undergrad Speed of Light & Magnetic Field: Condensing Wave Speed?
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High School Why Isn't Work Equal to Einstein's E=mc²?
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Undergrad Why the speed of light is constant for every observer?
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Undergrad Getting Invariant Curvature from Momentum & Energy
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Undergrad Line Element in Minkowski Space: Geometric Meaning
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Graduate Correct coordinate transformation from Poincare-AdS##_3## to global AdS##_3##
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Undergrad Survival Time in Black Hole: Myth Debunked
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High School Why do photons allow Doppler shift
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Graduate Time dilation and simultaneity: easier to see with a train
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High School Why Do We Need Gravitons for Understanding Gravity?
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High School Life on a planet near a black hole
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Undergrad Geodesic Equation: Understanding Proper Time & x^α
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Undergrad Evaluating metric tensor in a primed coordinate system
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Undergrad Velocity difference not preserved in special relativity
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Undergrad Gravitational Waves Affecting EM Fields: Evidence & Implications
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Undergrad Time & Space Expansion: High Schooler Qs
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Graduate Leonhard Euler's 4-Squares Identity & Maxwell's Equations
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Undergrad Einstein's views on gravity and inertia
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Undergrad Can light near a black hole travel in -t in external coords?
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Graduate Maximizing survival time when falling into a black hole
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Undergrad Some suspected Black hole mergers
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Undergrad Tetrad formalism outside of the equatorial plane
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Undergrad Definition of Vector Field in General Relativity
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High School Relativistic Spring-Mass Oscillator: A Paradox?
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High School Answer Questions on Relativity & Speed of Light | Beginner Physics
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Undergrad What happens to the stuff that enters a black hole?
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High School Does Einstein's Field Equations Explain Space Density in Different Regions?
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Graduate Light-clock and time dilation [was: Hydrogen atom expressed mathematically]
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Undergrad Energy Change: PE to KE in Different Frames
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Undergrad Is Length Contraction Accounted for in the Analysis of a Moving Clock?
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High School Gravity Illusion: Questions on Space-Time Curvature Granularity
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Undergrad Non-zero components of Riemann curvature tensor with Schwarzschild metric
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High School Special Relativity & Relativistic Mass
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Undergrad Atomic Clock Running Rate: Adjustment Possibilities?
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Undergrad Verifying claims about backwards time travel
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High School Time Dilation Effects: Hafele & Keating Experiment Revisited
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High School People-Safe Event Horizon: Can Alice & Bob Experiment?
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Graduate Faraday Tensor Conflicts: MTW vs. Wikipedia
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Undergrad Is my thought right or wrong? Light and a moving observer
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Undergrad An exception to the principle of equivalence?
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Undergrad Metric & One Forms: A R2 Confusion
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Undergrad Transformer Output in Non-inertial Frame: Frequency Change?
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High School What Are the Benefits of LIGO & VIRGO's Gravitational Wave Detection?
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Graduate Global solution to parallel transport equation?
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Undergrad Help with special relativity mathematics
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Undergrad How does time add up to 1 second with infinite smaller amounts of time?
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Undergrad Conserved Quantities in GR: Explained
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Undergrad Was Einstein's Proof of E=MC^2 Flawed?
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Undergrad Time Dilation: Get Answers to Your Questions
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Undergrad Time Dilation and photodetectors
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Undergrad Non-Coordinate Bases Explained
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Undergrad Frame Dragging Direction for Outward Moving Test Mass
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Undergrad Do Massless Particles Have Transitory Mass During Reflection?
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High School Solving the Mystery of Simultaneity: A Relativity Question
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Undergrad Time dilation again, Einstein or Resnick?
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High School Is Time Dilation Explained by Special Relativity, General Relativity, or Both?
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Undergrad Confusion with relativity of simultaneity
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Undergrad Gravity changes produced by a compressed and stretched spring
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Undergrad Twin paradox not including accelerations, it is wrong where?
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Undergrad What is the Alice/Bob thought experiment in Malament-Hogarth spacetime?
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Undergrad Relative Speed Impact on Synchronization: Clock Comparison
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High School Against length contraction explanation of magnetism
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High School Causality and the Lorentz transformation
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Undergrad Computational physics - Light trajectory near black hole
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High School How to measure Gravitational waves
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Graduate Free Simulator Software for Vacuum Field BVPs | Tom
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Undergrad GR: Mass of Potential Energy in Weak Field Limit
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Undergrad Questions about the general principle of relativity
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Undergrad Does Gravity Affect Space Density in a Vacuum?
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Undergrad How Does the Einstein Equivalence Principle Explain Energy Source Curvature?
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High School Can Time Dilation Affect the Mechanical Functioning of a Clock in Orbit?
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Undergrad Electric currents and length contraction
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Undergrad Why transformed E and B are asymmetric?
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Undergrad Understanding the Einstein Equivalence Principle
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Undergrad Gravitational field seen be relativistic particle
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Undergrad Velocity measurement by a stationary observer in GR
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Undergrad Lie Derivatives vs Parallel Transport
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High School Resolving the Relativity of Simultaneity: A Geometric Approach
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Undergrad Demonstration of time dilation
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High School Time Travel: Lorentz Invariance & Possibilities
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Undergrad Why do particles move along longest proper time trajectories
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Graduate Complex components of stress-energy tensor
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Undergrad Electrical Current Repelling Magnets Due to Relativity
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Undergrad Clock hypothesis, gravity time dilation and Equivalence Principle
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High School Visual Effects of Light Travel: Analyzing "Journey to Edge of Universe
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High School Synchronize Clocks in Relative Motion: How & Why
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Undergrad Nearly Lorentz Coordinate Systems: Is h a Tensor?
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Undergrad Finding Covariant and Contravariant components of Cylin Coor
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Graduate Uncovering the Truth Behind LIGO's Gravity Wave Detection: A Critical Analysis
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High School Gravity and how does the surface get it ?
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Graduate Mystery of Einstein's Relativity Solved with Classical Physics
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Undergrad Minkowski metric beyond the event horizon
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Undergrad Incompleteness of geodesics as ##t \longrightarrow 0##
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Undergrad Going from Galilei to Minkowski
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High School Do Objects in Motion Create Gravitational Waves?
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Undergrad Calculate Time at Infinity for GR Observer: A Photon's Journey
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High School 2 clocks -- Using orthogonal light path detectors in a space ship
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Undergrad Geodesic Deviation in Static Spacetime: Flat Geometry
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Undergrad How is a vector a directional derivative?
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