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 A problem with the solution to the ladder paradox
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Undergrad Is the sign of the Einstein equation right in Chandrasekhar's Black holes?
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Undergrad Assumption in the derivation of the Lorentz transformation
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Undergrad Understanding Jacobian Matrix Transformation in Special Relativity
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Undergrad Definition of Rindler Horizon: A Global View
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Undergrad Absolute meaning of spatial deviaton angle of light around the sun
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Undergrad Bondi ##k##-factor concept from first principles
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Undergrad Observer Inside Collapsing Shell
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Undergrad Reference Frame, Difference in Kinetic Energy, Fuel Consumed
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Undergrad Is acceleration absolute or relative - follow up
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Undergrad Reference frame vs coordinate chart
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Undergrad Uncover Traps in Spacetime Diagrams: Bob & Alice's Cases
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Undergrad Request for Input: 2D Minkowski Spacetime Diagram Generator
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Undergrad Time Dilation on 3D Torus: Clock Speed & Why It Matters
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Undergrad Detecting Gravitational Waves w/ Interferometers: Explained
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Undergrad Gravitational Field of Electromagnetic Waves: How is it Generated?
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Undergrad A computation of an integral on page 344 of Schutz's textbook
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Undergrad Hafele-Keating Exp: Balancing SR Effects in Plane Ref Frame
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Undergrad Merging black holes: gravitational waves and information
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Undergrad Angle-Preserving Linear Transformations in 2D Space for Relativity
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Undergrad Time Dilation: Gravitational & Velocity Effects Explained
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Undergrad Conservation of momentum in a collision
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Undergrad Kinetic vs Gravitational Time Dilation: Perceived Speed
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Undergrad Solving Spinorial Maxwell's Equations with Wald
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Undergrad Synchronous Reference Frame: Definition and Usage
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Undergrad Black hole formation watched from a distance
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Undergrad Proving Lorentz Metric on Real Type (1,0;1,0) Tensors in Wald Ch. 13
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Undergrad Cartan's Understanding of Einstein Field Equation
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Undergrad Kerr Black Hole: Superradiance Flux - Show Negative when 0<ω<mΩH
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Undergrad E Vector in E=mc2? Scalar Multiplication & Vectors
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Undergrad Relativistic Force & Velocity Relation to Acceleration
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Undergrad Does Time Drive Black Hole Travelers to a Central Singularity?
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Undergrad How Long Does it Take to Fall into a Black Hole?
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Undergrad GW detectors -- How much has their sensitivity improved since 2008?
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Undergrad Principle of relativity for proper accelerating frame of reference
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Undergrad Shape of de Sitter Universe: Is Hyperboloid Misleading?
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Undergrad Time travel is a fact or fiction.?
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Undergrad Does time dilation occur due to the speed limit of light or c?
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Undergrad Understanding Frequency in Rindler Coordinates for a Scalar Massless Field
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Undergrad Future null infinity confusion
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Undergrad Distinguishing Einstein Cartan from GR: Experiments
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Undergrad Rindler Transformation & 't Hooft's Introduction to General Relativity
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Undergrad Natural direction of pushforwards and pullbacks
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Undergrad Classical Aberration Formula: Understanding & Application
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Undergrad Information traveling faster than light? (thought experiment)
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Undergrad Understanding Papapetrou's Spinning Test Particles in GR
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Undergrad Violation of Special Relativity Principle?
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Undergrad Is Spacetime Curvature Misunderstood in Eddington's Experiment?
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Undergrad Purpose of Tensors, Indices in Tensor Calculus Explained
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Undergrad Parallel Transport of a Tensor: Understand Equation
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Undergrad Time Dilation in Gravitational Fields vs Acceleration on Earth
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Undergrad Geodesics in Schwarzschild metric
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Undergrad Deriving Contravariant Form of Levi-Civita Tensor
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Undergrad Showing Determinant of Metric Tensor is a Tensor Density
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Undergrad Relativity of Simultaneity Questions
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Undergrad Velocity in Relativity: Theoretical Analysis of Multi-Dimensional Universes
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Undergrad Expressing Vectors of Dual Basis w/Metric Tensor
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Undergrad Does a Magnet Curve Spacetime More Than a Non-Magnetic Mass?
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Undergrad Pole in the Barn Paradox: Exploring Relativity of Simultaneity
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Undergrad Calculating Force & Acceleration in Electrostatic Field (B=0)
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Undergrad GPS clock synchronization in ECI frame
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Undergrad Mass of Water Increasing with Heating
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Undergrad FTL Travel: The Matryoshka Paradox
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Undergrad What is the Meaning of Foliate in Physics and Spacetime?
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Undergrad Relative Speed of Light Between Objects
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Undergrad Light Emission by Stars: Mass, Red Shift & Hubble's Law
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Undergrad Questions regarding traveling speed in time and gravity as a force
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Undergrad Does Special Relativity Affect Mass?
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Undergrad Scope of General Relativity: Assumptions & Implications
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Undergrad Can You Derive \(T^{\mu\nu}\) From the Given Lagrangian?
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Undergrad Transpose and Inverse of Lorentz Transform Matrix
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Undergrad Schwarzschild Metric Singularity: Why?
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Undergrad Force on Scale in Rocket Scenario: Calculation & Discussion
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Undergrad Equivalence principle question
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Undergrad Position Vector in Curved Space Time: Explained
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Undergrad Gravity at Schwarzschild Radius of a Black Hole
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Undergrad Another interpretation of Lorentz transformations
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Undergrad Is Covariant Derivative Notation Misleading in Vector Calculus?
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Undergrad Time Dilation: Variables Beyond Speed & Gravity?
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Undergrad Left Invariant Metric: What I Don't Understand
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Undergrad Discussing Interior Schwarzschild Proper Lengths & Gaussian Curvature
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Undergrad Gravity: Introduction to Einstein's General Relativity
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Undergrad A short derivation of the relativistic forms of energy and momentum
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Undergrad Wavelength of Light Ray Affected by Gravity
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Undergrad How do forces change with speed?
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Undergrad Derive Escape Velocity GR: Source for Schwarzschild Metric
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Undergrad Negative Distance Metric: Elapsed Time & Space-Time Interval
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Undergrad If gravity is not a force, what is holding us down?
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Undergrad Uncovering a Decent Proof of E=mc^2
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Undergrad Calculating Covariant Derivative of Riemann Tensor in Riemann Normal Coordinates
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Undergrad Coordinate System for Minkowskian Spacetime Relative to Event
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Undergrad General relativistic comparison to Newtonian physics
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Undergrad What is the confusion surrounding time as a coordinate in general relativity?
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Undergrad Stress-Energy of Star Collapsing into Black Hole
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Undergrad "Testing the black-hole area law with GW150914"
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Undergrad Calculating Time Elapsed in Rocket Collision
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Undergrad Electromagnetic Field & Space-Time: Relationship Explained
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Undergrad Gradient Energy: Definition & Classical Mechanics
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Undergrad Transforming Object Positions b/w Frames: A Procedure
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Undergrad Does the Topology of AdS4 Affect Global Hyperbolicity?
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