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.
Graduate Can Photon Have Orbital Angular Momentum?
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Undergrad The Simultaneity Paradox: Investigating Net Rotation of a Balanced Beam
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High School Can someone tell me if I got this line from the Feynman lectures right?
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Undergrad Speed Difference of Time on Poles vs Equator of Earth and Other Planets
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High School Gravitational Time Dilation in L1 Point: Summed, Canceled or Else?
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Undergrad About the solution of the parallel transport equation
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Undergrad Four-momentum & four-acceleration in GR - Physics Discussion
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High School Absolute Time, I know its wrong and all but tell me if I got it right
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High School Can Dropping Stuff Challenge Einstein's Relativity Theory?
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High School Misunderstanding of "proper velocity"
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Undergrad Does p=mc Apply To Photons? | A.P. French's Special Relativity
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Undergrad E=mc^2 Mass: Rest Mass m0 vs Relativistic Mass γm0
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High School Would Earth fly off into space if the Sun disappeared?
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High School Some questions about the Doppler Effect at high velocities
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Graduate Continuity Equation for fluid in a curved spacetime
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Undergrad What happens in the area between black holes before they collide
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High School What is Absolute Time and Space?
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High School Plotting the Space-Time Continuum: Is it Possible?
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Undergrad How it's known that the variational principle works for relativity
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High School Clarification of Romer's Calculation
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High School Question About Lorentz Contraction: Red vs Blue?
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Graduate Stress-energy tensor of a rotating rod
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Graduate Birkhoff's theorem with cosmological constant
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Undergrad Deriving AdS Poincare Coordinates from Global Coordinates
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Undergrad Does Gravity Affect Mass Measurement in Flat Spacetime?
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Graduate Doubt about Energy Condition in Wormhole: Integral Along Null Geodesic
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High School Time Difference for High-Speed Travel: Asymmetric by Special Relativity
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Graduate The derivation of the volume form in Ricci tensor
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Undergrad Muons Decaying on Mt Washington: Expert Answers
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Undergrad Speed of Light in Inertial Ref Frames: Photon Perspective
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Undergrad Momentum and energy calculation in special relativity
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Undergrad Metric compatibility? Why is it an additional property?
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Undergrad Gravitational Waves: Difficulty Level of Study?
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High School Types of Metrics: Background & Reference Explained
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Graduate Calculating Nabla w V in General Relativity
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Graduate Time Measurement in MT Traversable Wormholes - Help Needed
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Undergrad How Does Lorentz Theory Address the Concept of Velocity Becoming Zero?
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High School Positive Energy Theorem Explained in Layman Terms
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Undergrad General Relativity & Curvature Explained: How Objects Fall
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Undergrad Speed of Light: Measuring Meters and Seconds
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Undergrad Gravity: Exerting Force or Warping Spacetime?
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Undergrad SXS Gravitational Wave Data: Initial Conditions Explained
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Undergrad Nash embedding theorem & curved spacetime
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High School Fishing in a Black Hole: Can It Be Done?
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Undergrad Parallel transport of a vector on a sphere
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Undergrad Can One Observe Anything Falling Into a Black Hole?
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Graduate Solving Covariant Derivative Notation Confusion
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High School Can Info Travel FTL? Understanding Speed of Information
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High School Help! Solving Einstein's Length Contraction Problem
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Undergrad Is General Relativity More General than Gravity?
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Undergrad Escape Velocity, Gravitational Velocity & Time Dilation
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Undergrad Derivative consisting Levi-Civita
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Undergrad Lorentz Boosts: Finding Speed, Coordinates & Rotation w/ Matrix Multiply
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Graduate Meaning of the word "conserved" in relativity
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Graduate Solved: Velocity of Isolated System in Different Inertial Sys.
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Undergrad Planck Length & Singularity: Point or Sphere?
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High School Lightwatch/Lightclock (Lichtuhr)
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Undergrad Observation of matter falling into Black Holes
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High School Infinite Curvature & Hawking Radiation Explained
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High School What Would Light Look Like If Train Moved at > Speed of Light?
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Undergrad GR: Clarifying Different Forms of the Metric for Self-Studiers
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High School Clarification on Length Contraction
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Undergrad Do These Equations Hold True Beyond Special Relativity?
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High School S5-HVS1: 10x Slower Relative Time?
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High School Linking Quantum Physics and Relativity: Theory of Everything?
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Undergrad Basic questions about raising and lowering indices
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Undergrad Solving Differential Equations in General Relativity
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Undergrad Summation Convention in Einstein Notation
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High School Elasticity of Spacetime: Does Spacetime Stiffen?
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High School How Does LIGO Detect Gravitational Waves Despite Changes in Spacetime?
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High School Energy, Mass, Light: Unveiling the Relationship
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Graduate Derivatives of Lagrangian Terms: Why We Lower?
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Undergrad Difference between 1. & 2. Kind Cristoffel Symbols
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Undergrad Special Relativity: Comparing Lengths in Parallel Motion
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Graduate Lorentz Transformation: Wave Equation vs. Interval Invariance
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Undergrad Conservation of Energy Momentum Tensor
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Undergrad Minkowski Metric: When to Use It
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Undergrad Predicting Local Arrival Time w/ Rocket Ship Clock & Accelerometer
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High School Can an object in every frame of reference have zero velocity?
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Undergrad Raising/Lowering Metric Indices: Explained
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Undergrad Architecture & Assumptions of General Relativity Theory
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Graduate Why does this term transform in this way?
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High School How to understand 'covariance' and 'contravariance'
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High School Size of Bullet Hole: Comparing 0.000001c & .9c
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Undergrad What if a body loses 86,6% of its mass as couples of gamma photons?
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Undergrad How specifically does an accelerated uniform rod Lorentz contract?
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Undergrad Flux of i-momentum: Is it Correct?
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Graduate Can Ricci Flow be Used in Lorentz Manifolds?
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High School Landau's Derivation of Lorentz Transformations: Questions Answered
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Undergrad Time Dilation, Length Contraction & Massive Bodies
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Undergrad Gravitational wave interactions and the equivalence principle
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High School Length Contraction in Accelerated Frame
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Undergrad Electromagnetic Potentials in Relativity: Retarded Potentials?
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High School Special case of relativistic velocity addition law
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Undergrad Lorentz transformation for 3 frames (2 dimensions)
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Undergrad Gravity as Curvature of Spacetime: Understanding Einstein's Theory
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Graduate NASA hypothetical engine w/ relativistic ions
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Undergrad Violations of Energy Conditions for Metric in Relativist's Toolkit
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Undergrad Connection between General Relativity & Chaos Theory?
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Undergrad Christoffel's symbols: symmetry in the two (lower) indices
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