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.
I Atomic Clock Exp on Ballistic Flight: Proving Clocks are Accelerometers
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I Measuring Light Reflection in a Black Hole
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I Is the Fizeau-Type Experiment Valid for Measuring the One-Way Speed of Light?
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Insights Introducing Relativity on Rotated Graph Paper: A Graphical Motivation
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I Spin (or not) of a Kerr Black Hole
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B Help Me Determine Validity of Time Dilation Formula
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A Max Force Debate: 2 vs. 3 Papers in Favor/Against
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I In what formation does this simple block universe exist?
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I Lorentz transformation of the Gravitational constant
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B Confusion in notation of Lorentz Transformations
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I Simultaneity of accelerated clocks
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I Can Hypothetical Velocities Exceed the Speed of Light?
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I Precausality and continuity in 1-postulate derivations of SR
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I Is Erik's Paradox Challenging Our Understanding of Gravity and Light Speed?
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B Is the relativity of simultaneity more than just a fudge factor?
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B Is there a frame where you die before you are born?
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I Learn Physics with Eigenchris: Relativity & Tensors
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I Is There Experimental Evidence That Contradicts Time Contraction Predictions?
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A I can't verify a relationship between cofactor and determinant
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A Derivation of Equation 26 in Bardeen's Four Laws of Black Hole Thermodynamics
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B Black hole at the beginning of time
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I Gamma - A Minkowski Spacetime Diagram Generator
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Finding Event Horizon & Ergosphere: Derivations & Formulas
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I Finding Riemann Components: Packages & Solutions
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I Links between the Lorentz equations and SR/GR
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B Any plausible explanation for dynamical length contraction?
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Insights The Schwarzschild Geometry: Part 3 - Comments
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I Gravitational force equation derived from GR
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Insights The Schwarzschild Geometry: Part 1 - Comments
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A Dustball Collapse & Evaporation: No Black Hole Singularity
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I Schwarzschild Radius vs Event Horizon: Black Hole?
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I Clock synchronization for ring-riding observers on rotating disk
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I Black Hole Waterfall Analogy & Light Speed
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B What is dTau? The Role of dTau in Measuring Time on a Worldline
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I Special Relativity: Grokking for a Female Neurobiologist in her 60s
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I Andrzej Dragan's "Course on Relativity" Videos | YouTube Playlists
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Insights How to Study Fermi-Walker Transport in Minkowski Spacetime
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B Accurate Visualization of GR - Science Clic
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I Index notation for inverse Lorentz transform
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I Ta-Pei Cheng's "Relativity & Cosmology" Course on YouTube
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I Calculate Ricci Scalar & Cosm. Const of AdS-Schwarzschild Metric in d-Dimensions
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I Help Deriving Geodesic Equation from David Tong Notes
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A Time Dilation in Reissner-Nordström Metric: Even or Odd?
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I Raising/Lowering Indices w/ Metric Tensor
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B Why is Light Speed Invariant & Finite?
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B Why is the speed of light a constant?
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A Teaching SR without simultaneity
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B Clock Ticking in Gravitational Well: Observation Rate
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B How to derive the Lorentz transformation in the simplest way?
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I Is there only one structure of the universe?
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B Why is Lorentz Ether Theory Hard to Rule Out?
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I The Good Guy Fluctuation: Is Sheldon's Second Line Making Sense?
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B Check my understanding of Time Dilation and Length Contraction
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B Listen to Record from Planet w/ Extreme Gravity
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I Relativity of simultaneity doubt
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I What would be the form of this world line?
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I What's the underlying frame of the Einstein's Field Equation?
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I Why Do Longer Wavelengths Go Slower in Glass?
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B Does Relativistic Speed Affect Mechanical Watch Oscillation?
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A Why is the Principle of Equivalence Necessary for GTR?
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B Measuring Light Velocity Correctly: Thought Experiment
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B Gravitational Orbits: How the Earth Knows Where to Go
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I Kinematic Decomposition for "Rod and Hole" Relativity Paradox
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A Can Einstein Tensor be the Product of Two 4-Vectors?
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I Time & Gravity in Rotating Faster Than Light?
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I Light Speed in Dense Medium: Explained
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B Is energy really not conserved in a constantly expanding Universe?
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I Transform Coordinates for Torus Metric in Wald
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I Unruh Effect (1+1)D: Understanding Equation 5.68
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I Show Maxwell's Eqns. on a Cauchy Surface (Wald Ch. 10 Pr.2)
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I Quasi-Static Change of Event Horizon Area
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I Determine Scaling Dimension of Field Theory
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B Pendulum Clock vs GR: Time Discrepancy
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B Could There Be a Cosmic Speed Limit Higher Than the Speed of Light?
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I Minkowski Spacetime KVF Symmetries
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I Ex. 19 Gauge Fields, Knots & Gravity: Is Rotation Correct?
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I Yang-Mills Stress-Energy Tensor Explained
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Space/Spacetime Metrics: Comparing Routes in PHY 101
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I Relative Simultaneity: Comparing 2 Incompatible Calculation Methods
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I Judge Original Time & Length Special Relativity
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I Because of length contraction, does absolute position exist?
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B What is a suitable term for relativistic length in STEM education?
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A Massless Particle Action under Conformal Killing Vector Transformation
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B The Paradox of Relativity Length Contraction
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I Synchronous Frames/Coordinate Charts
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I Analyzing Dynamics in Constant Acceleration w/Rindler & Equivalence
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I Can Thinking Fast Slow Down Time in Relativity?
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A Covariant Derivative of Stress Energy Tensor of Scalar Field on Shell
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I Coord. Time Vector Field: Schwarzschild vs Gullstrand-Painleve
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I What is the angular velocity of a satellite?
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I Lorentz Transf. of Complex Null Tetrads: Formula (3.14-17)
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Insights PF's policy on Lorentz Ether Theory and Block Universe - Comments
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I Michelson & Morley in Space-Time Diagram: Can't Make it Work
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I How things appear to an accelerated observer
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I Linear Accelerator Length Contraction
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B Harold White's Warp Drive Research: Casimir Effect Insight?
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B Adorable Gravity Demo - National Medals Lab
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I Gradient as vector vs differential one-form
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A Characterizing GR Traj in Minkowski Space
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I Double Pulsar: 16 Year Study Validates Relativity
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