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 Understanding Relativity of Simultaneity
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Graduate Understand Contravariant Transformations b/w Coordinate Systems
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Graduate Proving Time Dilation: Troubleshooting Tips
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Graduate Gravity as geometry vs as a force
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Graduate Ray of light through an elevator
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Graduate How Do the Axes of the Minkowski Diagram Work?
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Graduate Faster than light travel implications
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Graduate Time Travel at c: Photon's Perspective
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Graduate Why Does Light Travel the Shortest Path?
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Graduate Gravity Manipulation: Benefits and Implications
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Graduate How is information lost if nothing passes the event horizon?
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Graduate What determines when events are simultaneous?
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Graduate Light Wavelengths in Moving Frames: A Closer Look at the In-Phase Problem
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Undergrad Special Relativity Books: An Illustrated Guide & Beyond
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Graduate How can EM interaction escape a black hole?
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Graduate Einstein Tensors and Energy-Momentum Tensors as Operators
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Graduate Two dimensional Lorentzian vs Euclidean geometry
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Graduate Testing Einstein's Theory: What if Bob Jumps Off the Empire State Building?
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Undergrad Why does light Ray bend in accelerating elevator but not...
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Graduate GR Metric Tensor Rank 2: Quadratic vs Shear Forces
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High School Why aren't standard rods and clocks affected by LC and TD?
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Graduate Deriving E=mc^2 from relativistic doppler effect
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Graduate Calc Rotational E of 6km Bar: Einstein's Method
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Insights Struggles with the Continuum - Part 4 - Comments
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Graduate Deriving Lorentz Transforms: Unnecessary Step?
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Undergrad Why can't Gravitational Accelerations vanish everywhere?
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Graduate Event Horizon Conflicts: Understanding the Unknown
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Graduate Has information been lost to a black hole?
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Graduate Astronomer's Induction of Observed Gamma/Radio Flashes in Isosceles Triangle
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Graduate Two blobs alone in the Universe
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Graduate What is the Concept of Tenseless Space-Time?
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Graduate How is the magnetic field related to Special Relativity
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Graduate SR Kinetic Energy Mass Increase for Uncharged Particles?
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Graduate Gravitational Lensing of Fast Receding Galaxies: Does Speed of Light Matter?
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High School Multiple Infalling to Black Hole Horizon: Alice, Bob & Charlie
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Undergrad Why is the medium in the Michelson Morley experiment ignored
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Graduate Time dilation magnitude in orbit around a black hole
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Graduate Proving Lorentz Transform Without Light Signal
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Graduate Explaining Tensors in Special Relativity
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Undergrad Electric Field of Moving Charge: Effects on Distance
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Graduate Questioning Constant Acceleration & Sanity - Is Something Wrong?
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Graduate Metrics: Stationary & Rotating - Can They Coexist?
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Graduate Relativistic Time & Mass-Energy Phasors
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Graduate Electric Field & Motion: Understanding Why it Doesn't Change
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Graduate Stress Energy Components: 3 or 4 Densities?
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Graduate Speed of light and acceleration in general relativity
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Insights Struggles With the Continuum - Part 3 - Comments
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Graduate From the point of view of the speed of light
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Undergrad How Does Observer Motion Affect Calculated Work in Relativity?
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Undergrad The cause of spacetime and gravity
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Graduate Covariant Characterization of Causality in Continuum: T^{ik}v_k
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Graduate Light cone shape while speeding up
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Graduate Gravitational Radiation and Cosmological Constant
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Undergrad Gravitational time dilation, how much?
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Graduate Giancoli's Treatment of GR & Cosmology: Shockingly Inaccurate
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Graduate Conserved quantities for massless particles (Schwarzschild)
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Graduate Newton's 2nd law for Massless Particles in SR
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Graduate Two-mass Schwarzschild metric instead of Kerr metric?
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Graduate Simultaneity: how can all observers be right?
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Graduate How is the Einstein field equation converted to its tensor form?
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Undergrad E=mc^2 how you picture it in nature?
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Graduate Accelerating or Decelerating Universe Expansion?
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Undergrad Length contraction: Is it permanent?
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Graduate Will a Photon Clock Tick Faster or Slower When Moving Towards You?
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Graduate Question regarding GR wrt potential energy
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Graduate Particle & Energy: Does Mass Decrease with Speed?
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Undergrad How Does the Twin Paradox Illustrate Time Dilation in Special Relativity?
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Undergrad Frame of Reference: Definition & Explanation
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Graduate Lorentz invariance of the Minkowski metric
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Graduate Resolving Tiny Structures: De-Broglie-Relation & Relativity
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Graduate Photon Orbit Around a Black Hole: Conservation Law Effects
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Graduate Four Indistinguishable Phenomena?
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Graduate Is Lorentz invariance is true in curved spacetime?
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Undergrad E=MC^2 - easy explanation for kids
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Undergrad Can gravatational force only influence objects with energy?
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Graduate Spacetime Interval: Is (Δs)2 = (ct)2/γ2 a Coincidence?
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Graduate Questions about E=mc^2 - Understanding the Complexity
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Graduate Superluminal Energy Transport & Causality: Does It Violate Relativity?
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Graduate Phonon Lorentz Invariance in Superfluids - Papers?
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Graduate Unraveling the Metric Found in Special Relativity
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Graduate GTR Postulates: What to Know About the Equivalence Principle
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Graduate Equivalence of formulas for time reduction factors in GR
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Graduate Einstein's Solution to the PDE for Tau in 1905 SR Paper
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Graduate How does the doppler effect resolve the twin paradox?
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Undergrad Transformations in higher dimensions
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Graduate FTL: Is Faster-than-Light Information Relocation Theoretically Possible?
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Graduate Do Photons Challenge the Concepts of Mass and Energy in Physics?
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Graduate Speed of Light & Black Hole: What Happens?
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Undergrad Vertical Interferometer Experiments: Michelson-Morley, Miller, etc.
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Graduate What dimension does space-time curve in?
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High School Is spacetime just a mathematical trick or is it the actual physical reality?
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Graduate Does Stress-Energy Tensor Depend on Direction of Relative Velocity?
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Graduate What causes the warping of spacetime?
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Graduate Solving Electromagnetic Tensor & B-Field
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Graduate Einstein tensor of a gravitational source
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Graduate Interstellar travel and Special Relativity
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Graduate Velocity-Based Time Dilation: Teen's $400k Video Correct?
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Graduate Gravitational Waves & Multidimensional Spacetime: Experiments & Detection
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Undergrad Question about photons traveling on same path
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Graduate Naive questions about SR: time and space dilation
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