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 Lorentz Invariance Violation for Manifolds
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Undergrad What Happens to Laser Light Inside a Spaceship Traveling at Light Speed?
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Undergrad Differential form of the velocity equation in a non-standard configuration
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High School How does an isolated observer know if they're accelerating?
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High School Gravitational Lensing & MOND: Does DM Explain Observations?
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High School Length contraction and Time dilation calculation
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Graduate Can you numerically calculate the stress-energy tensor from the metric?
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High School Matter & Space-Time: A Discussion
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Undergrad Four Velocity Vector: why divide by time according to the particle?
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Undergrad Zero-Energy Universe: Reliable Source?
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Undergrad Treatment of Relativity in "Las Leyes de la Termodinámica" Movie
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High School What Would You Experience Inside a Black Hole and How Does Time Behave?
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High School Does Gravity Act on Everything? Fundamental to GR?
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Undergrad Falling EM system contradicts the equivalence principle?
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Undergrad Understanding Microcausality in QFT
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Undergrad Is x Equal to x' and t Equal to t' in Lorentz Transformations?
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Undergrad Rotation and Boost of Tensor Components: Meaning?
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Undergrad The proper Schwarzschild radial distance between two spherical shells
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High School How the role of Mass is justified for below cases? (Earth/Moon, Jupiter/Io)
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High School Query about Pound-Rebka like experiment
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High School Could Asteroid Strikes Affect Mercury's Perihelion Advance?
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Undergrad Can We Practically Measure the Gravitomagnetic Effect with Spinning Cylinders?
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Undergrad Question re spacial curvature K(r) w/r/t the Shwarzchild metric
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Undergrad Understanding how to derive the relativistic-relative velocity formula
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Undergrad Parallel transport vs Lie dragging along a Killing vector field
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High School Accelerate Light-Clock Simulation: Proper Time & Coordinate Time
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Undergrad Hyperbolic Geom of Minkowski Space: Chung et al. 2009
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Graduate How Does Visser Derive Schwarzschild Geometry from Minkowski Space?
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Undergrad Transformations of Electromagnetic Fields: Griffiths' Claims
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High School Descending a Rotating Black Hole: Hit the Ring Singularity?
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High School Why is "time orthogonal to space" in inertial reference frames?
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Graduate Solving Jackson's 3rd Ed. Equations Involving A, L and g
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High School Can Universe Be Decelerating in Time?
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Graduate Curvature Tensor for Dual Vectors
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High School Descending a Black Hole: Spaghettification or Compression?
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Undergrad Lorentz transformation of the "bilinear spinor matrixelement"
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Graduate Constant Scalings of 4-Vectors" - Zweibach, 2nd Ed.
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High School Deriving Lorentz Transformations with 3 Postulates
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High School Solving Doubts about Simultaneity Exp. in Special Relativity
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Undergrad Choice of signature important for superluminal 4-velocity? (Minkowski)
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Graduate Understanding Killing Vector Equation Notation
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Undergrad Null Spacetime Intervals and Quantum Superposition
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Insights Is Pressure A Source Of Gravity?
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Undergrad Study After Schwarzschild Spacetime: What's Next?
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Undergrad Gravitational time dilation using an accelerating light-clock
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Undergrad Light-Cone & 4-Vector Properties
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Undergrad Spacetime Interval & Energy-Momentum 4Vec: Reconciling Hyperbolic Geometry
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Graduate Can R. Mallett's Device Overcome Energy Challenges for Time Travel?
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High School How Many Reference Frames Can Be Coincident at the Origin?
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Graduate Understanding how to derive the stress-energy tensor formula
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Undergrad Testing Gravitomagnetic Effect: Max Practical Results
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High School The Missing Mass of a reaction
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High School Unlearning the Block Universe: How Relativity Challenges Our Perception of Time
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Undergrad Mass distribution behavior of the singularities during black hole mergers
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Undergrad Interactive Spacetime Diagrams: Get Feedback on What I Built
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High School Rookie question about proper time
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Undergrad Why Can't Objects Travel Faster Than Light?
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Undergrad How to Incorporate Metric Coefficients into Worldline Plots in Curved Spacetime?
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Undergrad What Are the Physical Properties of Human-Sized Worm Holes?
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Undergrad Understanding Relation of Proper & Vector Quantities
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High School Gisin's ideas on time vs. special relativity—how does one reconcile them?
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Undergrad Relative Velocity of Particle ##p##: S vs S
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Undergrad Lorentz boost -- speed or velocity?
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Undergrad Addition of Cosmic Velocities: Expansion Equation & Horizons
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Undergrad Electromagnetic field according to relativity
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High School Is E=mc² the Formula for the Speed of Light?
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Undergrad Does direct interparticle action imply advanced inertial forces?
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High School Is there a thought experiment to show that the speed of light is constant?
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High School Space + time = space time? then....
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High School Time Travel Equation for Case B
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High School Time & Speed of Light: Not a Universal Constant
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Undergrad Understand Spacetime Diagrams: Calculating Proper Time
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Undergrad Find Einstein's Field Equation - Intuition with Strong Equivalence Principle
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Undergrad Touch & Relativity: What Does It Mean?
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Graduate Understand Linear Perturbations to Stationary Black Holes
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Undergrad Length Perception & Spacetime Warp: Is it Warped?
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Undergrad Mathematical Truth of Physically Observable Quantities
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Undergrad Proof that two timelike vectors cannot be orthogonal
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Undergrad Four-Velocity: Geometric Definition
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Undergrad Affine Space: Understanding the Difference from Ordinary Space
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High School Learn Special Relativity: Understanding Graphs for X-T System
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High School Interpreting Lorentz Transformation Rotations
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Undergrad Trying To Calculate Christoffel Symbols
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Undergrad Find Experimental Results for Physics Project
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High School Bending of Spacetime: Time Delay?
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Undergrad The magnitude of a four velocity
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Graduate What is the significance of the TL interval square measurement in relativity?
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High School 2 objects at 0.6c in opposite directions. Can outrun light?
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Insights Slowly Lowering an Object in a Static, Spherically Symmetric Spacetime
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High School Particle with negative mass inside a black hole horizon
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Graduate Metric Form of ##g_{μν}## - Solving a Challenge
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Undergrad Are Basics of Cosmology Difficult to Grasp?
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Graduate Stats on Students Understanding Theory of Relativity
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High School Relativity & Computer Calculations: Speed Up 300x?
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Undergrad How Elastic is Space (Spacetime)? | LIGO & Gravitational Waves
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High School Length Contraction Thought Experiment: Spot Mistake/Wrong Assumption
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High School Gravity & Dark Energy: Newton, Einstein & Beyond
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Undergrad What does E(nergy) = m(ass) (times c^2) mean?
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Undergrad Area & Volume Naming Conventions: 4 Questions
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Undergrad Penrose Singularity: Trapped & Anti-Trapped Surfaces Explained
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