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 Hafele-Keating Exp: Balancing SR Effects in Plane Ref Frame
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B How does curvature of spacetime affect the motion of test particles?
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I Merging black holes: gravitational waves and information
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I Angle-Preserving Linear Transformations in 2D Space for Relativity
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A Understanding Frame Fields in GR: A Beginner's Guide
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I Time Dilation: Gravitational & Velocity Effects Explained
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A Orbiting spaceship just above a black hole horizon
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I Conservation of momentum in a collision
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I Kinetic vs Gravitational Time Dilation: Perceived Speed
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B L = 0 in the equation for effective potential energy?
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B Can't Avoid Invoking Preferred Frame: A Look at Free Falling Into a Black Hole
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I Solving Spinorial Maxwell's Equations with Wald
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I Synchronous Reference Frame: Definition and Usage
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I Black hole formation watched from a distance
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I Proving Lorentz Metric on Real Type (1,0;1,0) Tensors in Wald Ch. 13
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I Cartan's Understanding of Einstein Field Equation
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I Kerr Black Hole: Superradiance Flux - Show Negative when 0<ω<mΩH
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I E Vector in E=mc2? Scalar Multiplication & Vectors
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I Relativistic Force & Velocity Relation to Acceleration
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B Time Dilation in a Galaxy: Calculating Mass Effects
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I Does Time Drive Black Hole Travelers to a Central Singularity?
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I How Long Does it Take to Fall into a Black Hole?
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I GW detectors -- How much has their sensitivity improved since 2008?
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B Understanding Spacetime Diagrams from "Reality is not What it Seems
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I Principle of relativity for proper accelerating frame of reference
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I Shape of de Sitter Universe: Is Hyperboloid Misleading?
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B Charged Particle on Earth's Surface: Will It Emit Radiation?
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I Does time dilation occur due to the speed limit of light or c?
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I Understanding Frequency in Rindler Coordinates for a Scalar Massless Field
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B Twin Paradox: Orbital Geodesics, Gravity, & Time Dilation
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I Future null infinity confusion
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I Distinguishing Einstein Cartan from GR: Experiments
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B Time Dilation: Traveling to a Distant Star in 4.5yr
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I Rindler Transformation & 't Hooft's Introduction to General Relativity
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B Space-Time Expansion: Objects Accelerating Without Force?
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B How Matter Bends Space & Slows Time: Physical Mechanism
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I Natural direction of pushforwards and pullbacks
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A Condition for a spacelike surface to be achronal
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I Classical Aberration Formula: Understanding & Application
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B Photon Mass: Does Light Have Direction?
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I Information traveling faster than light? (thought experiment)
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A question on proper time in special relativity
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A Some algebra in Schutz's textbook
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I Understanding Papapetrou's Spinning Test Particles in GR
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I Violation of Special Relativity Principle?
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A M-Theory: Bosonic Fields - Need Help With Part III
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I Is Spacetime Curvature Misunderstood in Eddington's Experiment?
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I Purpose of Tensors, Indices in Tensor Calculus Explained
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I Parallel Transport of a Tensor: Understand Equation
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I Time Dilation in Gravitational Fields vs Acceleration on Earth
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I Geodesics in Schwarzschild metric
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I Deriving Contravariant Form of Levi-Civita Tensor
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I Showing Determinant of Metric Tensor is a Tensor Density
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I Relativity of Simultaneity Questions
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I Velocity in Relativity: Theoretical Analysis of Multi-Dimensional Universes
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I Expressing Vectors of Dual Basis w/Metric Tensor
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I Does a Magnet Curve Spacetime More Than a Non-Magnetic Mass?
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I Pole in the Barn Paradox: Exploring Relativity of Simultaneity
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I Calculating Force & Acceleration in Electrostatic Field (B=0)
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I GPS clock synchronization in ECI frame
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I Mass of Water Increasing with Heating
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B Reactionless Drive Using Light Bouncing Off Moving Mirrors
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I What is the Meaning of Foliate in Physics and Spacetime?
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B Inertial Frame of Ref & Forces: Understand Special Relativity
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I Relative Speed of Light Between Objects
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I Light Emission by Stars: Mass, Red Shift & Hubble's Law
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I Questions regarding traveling speed in time and gravity as a force
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I Does Special Relativity Affect Mass?
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I Scope of General Relativity: Assumptions & Implications
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I Can You Derive \(T^{\mu\nu}\) From the Given Lagrangian?
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I Transpose and Inverse of Lorentz Transform Matrix
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I Schwarzschild Metric Singularity: Why?
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B Does GTD Really Cause Gravity? | Brian Greene/Horn/e's 2011 The Hidden Reality
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I Force on Scale in Rocket Scenario: Calculation & Discussion
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A Some questions about the derivation steps in the Gravitational deflection of light section in Schutz
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B Derive Special Relativity: Alternative Paths
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A Can the geodesic equation be derived from the EFE in a certain limit?
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B What is the distance at which gravity and the cosmological force are equal?
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I Equivalence principle question
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I Position Vector in Curved Space Time: Explained
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B Doppler Shift of Neutron: Energy & Momentum
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B Cosmological Red Shift in a Perfectly Reflecting Box
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B Faster than speed of light due to time dilation?
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I Gravity at Schwarzschild Radius of a Black Hole
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I Is Covariant Derivative Notation Misleading in Vector Calculus?
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I Time Dilation: Variables Beyond Speed & Gravity?
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I Left Invariant Metric: What I Don't Understand
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I Discussing Interior Schwarzschild Proper Lengths & Gaussian Curvature
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I Gravity: Introduction to Einstein's General Relativity
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I A short derivation of the relativistic forms of energy and momentum
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I Wavelength of Light Ray Affected by Gravity
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B Need to Check GR Beliefs? Integrity Filter Here!
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B Why Does Mass Pull on Other Stuff?
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B Light Speed Traveling: Cosmic Background Radiation Effects
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B Gravitational Lensing: Refraction or Something Else?
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I Derive Escape Velocity GR: Source for Schwarzschild Metric
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B Energy & Pendulums: Is Negative Energy Real?
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I Negative Distance Metric: Elapsed Time & Space-Time Interval
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I If gravity is not a force, what is holding us down?
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B MEGA Drive: Jim Woodward's Propulsion System, Real or Fiction?
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