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.
Undergrad Effect of GW on Steel Bars: What's the Impact?
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Graduate LLT, GCT and gauge transformations
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High School Light Momentum Confusion: Proving with Math/Eqns
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High School Velocity of light in acceleration frame.
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High School Relativity Problem: Questions on Time, Movement & Reality
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Undergrad Subbing Planck length into length contraction equation?
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Undergrad How Do Tensor and Vector Notations Differ in Physics?
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High School Schwarzschild Metric Derivation?
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High School Gravitational Waves: What Happens In Between?
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Undergrad Solving Geodesic Equations with Killing Vectors: Is There a General Solution?
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Undergrad Observing Hawking Radiation from Inside a Black Hole
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Insights Precession in Special and General Relativity - Comments
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Undergrad Thought Exp: Light Trapped in Gravity Well of Black Hole
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Undergrad GR & Mercury Precession: Explaining the Diff.
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High School General Questions about Special Relativity
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Undergrad Comparing Black Holes & Contracting Universes
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Graduate Exploring Spacetime Propagation in Higher-Dimensional Relativity
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Graduate Polar coordinate neighbourhoods in manifolds
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High School Can Light Escape the Gravitational Pull of a Black Hole?
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Insights Tetrad Fields and Spacetime - Comments
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Undergrad Sticky beads and a simple wave
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Undergrad Relative Velocity Time Dilation: Experiments Disproving Theory?
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High School Mass & Stress-Energy Tensor: Why Not Explicitly?
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Undergrad 'If a photon were trapped between two perfect mirrors....'
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High School Can a massive object have a velocity of c and zero mass relative to light?
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Undergrad Is Space Always Curved, and What Does It Mean for Mass and Time?
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Undergrad Validating a ds^2 Metric in General Relativity
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High School What Is the Gravitational Memory Effect?
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Undergrad Schwarzschild Radius of All Matter & Energy in Known Universe
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Undergrad How Does Length Contraction Influence Electromagnetic Forces?
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Undergrad Why is energy not Lorentz invariant?
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Undergrad At what point does classical EM become relativistic EM?
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Undergrad Lorentz Transform: Justifying Use in Acceleration
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High School Why do we know space-time is locally flat?
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High School Help With the Twin Paradox: Why Does Time Dilation Apply?
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Graduate Deriving Amplification of Images in Schwartzschild Metric
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Graduate Linearized metric for GW emitting orbiting bodies
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Graduate Momentum Constraint in GR: ADM Formalism
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Undergrad Gravitational Potential Energy: 1/2 Factor Explained
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Undergrad What does the Einstein tensor actually tell you?
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High School Help With Units in General Relativity
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High School Is Time Perception Similar to Browsing the Web?
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Undergrad Noticing CTC's / time travel in a Godel space-time
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Graduate Riemann Tensor Equation: Simplifying the Riemann-Christoffel Tensor
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Undergrad Spacetime Metric Topology: Does g Induce O?
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High School Gravitational time dilation depth charge
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Undergrad Modeling the effects of GW and the "Earth Frame"
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Undergrad Can one determine the velocity of a photon in the fourth dimension using limits?
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Undergrad Conformal transformation of the line element
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High School Mach's Principle: Understanding the Universe's Rotation Around Us
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Graduate Relationship between metric tensor and position vector
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Undergrad Alice Sees Sudden Acceleration at Event Horizon
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Undergrad Understanding Relativistically Spinning Disk/Ring: Lorentz Boosts
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Undergrad Effect of Special Relativity on Spacecraft Thrust & Isp
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High School Can I get clarification on the constant speed of light
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Graduate Prep for Hawking/Ellis: Point Set Topology Needed
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Undergrad Comparing Gravitational Waves & Post-Newtonian Approximation
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Undergrad What is the Concept of Velocity and Acceleration in General Relativity?
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Undergrad What Actually Happens vs What You See in SR
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Insights Spacetime Diagrams of Light Clocks [comments]
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High School Box in gravitational field
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High School Could light be slowed down and be observed
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Undergrad What is the velocity of the photon through the fourth dimension x4?
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High School Light follows Geodesics-Spacetime-Big Bang-Time dilation
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Undergrad What happens during acceleration in time dilation?
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High School Schwarzschild Metric: Non-Rotating Black Holes & Examples
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Graduate Relativistic conduction current density?
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Undergrad What are the independent components of the Riemann tensor
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Undergrad Radar Doppler effect: classical vs relativistic
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Graduate Recognize 1-Way Horizon Coordinate-Independently?
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Graduate Is there a mathematical proof for the existence of black holes?
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Undergrad Christoffel symbols transformation law
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Graduate Derivation of Black Hole Entropy: Hawking & Beckenstein's Arguments
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Undergrad Time to Form Black Hole? | Observer Slows Time at Event Horizon
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High School Can 5D Kaluza-Klein Theory Be Adapted for 2D Space-Time Models?
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Undergrad A light wave and a sound wave travelling together
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Undergrad Is Anything Truly at Rest in Every Frame of Reference?
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High School If in a lift we can tell if acceleration is due to g or to a push
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High School Is there an opposite phenomenon for time dilation ?
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High School Time on 1st & 2nd Floors: Gravity & Light Measurement
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High School How can we derive the value of energy in rest mass and the relationship to c^2?
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Graduate Weyl Vacua Solutions to GR: Derivation from Riemann Tensor
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Undergrad Solving Mass-Speed Relation Proof Challenges
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High School What is the difference between curved spacetime and a field?
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Undergrad Explain Relativistic Mass: Special Relativity & F=ma
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Undergrad Is gravity really not a force according to the weak equivalence principle?
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Undergrad Godel Solution Metric: Shapes & Descriptions
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High School Speed of Light Invariant in Vacuum: Experiment Proof
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Undergrad Past Existence: Can Conjectures Be Tested?
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High School Study Special Relativity: 6th Formers, Books & Websites
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High School Understanding the Mystery of Sunlight Bending During a Solar Eclipse
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Undergrad Is There a Mistake in My Understanding of Planck Units and Dimensional Analysis?
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High School Can you explain GR without math?
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Undergrad Trick for Remembering Schwarzschild Christoffel's/EFE's?
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High School Gravity: Attractive or Repellent? Unanswered Questions
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Undergrad Speed of light and speed of sound both constant
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High School Einstein's relativity of simultaneity & quantum paradox.
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Undergrad Morris-Thorne Wormhole Metric Terms
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Undergrad Correctly Using Lorentz Transformations: A Special Relativity Problem
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Undergrad Inside Black Holes: Unraveling the Kerr Metric Structure
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