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.
High School Gravity: Mass vs. Size Explained
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Graduate Sending Info at Relativistic Speeds? | Doppler Effect | Horizons Photo
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Graduate Relativity and conservation laws
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Graduate What is the Kretschmann Invariant?
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Graduate Time Dilation: Twins Separated by Black Hole's Gravity
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Insights Why Does C Have a Particular Value, and Can It Change? - Comments
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Undergrad Time Dilation due to Gravity: Formula Explained
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High School Stretched piece of spacetime example appropriate for student
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Graduate Deriving Riemann Tensor Comp. in General Frame
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Graduate Solve TOV for Non-Constant Density Star - Friends Help Needed!
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Graduate Light & Gravity: Momentum Exchange Examined
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Undergrad Why does gravity affect time in space?
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Graduate Leonard Wiechert Potential: Coulomb Law & Lorentz Transforms
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Graduate Relativity & Dipole Radiation: Reconciling Perspectives
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Graduate Is Special Relativity Correct for Observer A?
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High School Moving clock, what exaclty "ticks" slower then the stationar
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Graduate Gravitational Constant: Why Is It Fundamental?
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High School Is Time Travel Possible Beyond the Speed of Light?
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Graduate Are light and time somehow intertwined?
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Undergrad Would Gravity Exist Without Inertia?
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Graduate Lorentz transformation matrix and its inverse
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Graduate Wait.... what causes gravity again?
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Graduate Why is the magnitude of 4-velocity always equal to the square of c?
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Graduate Can kinetic energy lead to black hole?
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Graduate Andromeda paradox and determinism?
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Graduate How can light be trapped in a black hole?
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Graduate Is caustic surface of an astrophysical black hole one event?
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Graduate Cauchy-Schwarz for two spacelike vectors
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Graduate The Relativistic Figure Skater
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Graduate Relativistic Transformation of Lorentz Force (E + v x B)
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Graduate Can You Move Faster Than Light Relative to Another Object?
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Graduate Super Translations Explained | Stephen Hawking
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Graduate What is the Conformal Boundary of AdS Space?
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Graduate Which text on differential geometry to supplement relativity
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Graduate Penrose Diagram for Multi-Blackhole Solutions: Reference
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Undergrad How do we know the speed of light is constant?
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Graduate Is Gravitational Force conserved at the origin (r=0)?
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Graduate Does time dilation affect only the measurement of time?
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Graduate Do we move in the Universe? Or is everything stationary
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Graduate Gravitating Body Acceleration: Bob vs Jim
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Graduate Necessary conditions for a Penrose diagram?
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Graduate If the concept of relativistic mass is rejected....
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Undergrad Why Does Momentum Matter for Space but Not Time?
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Undergrad Which is Moving Faster? Basic Question Explained
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Graduate Determine Absolute Speed Using Time Dilation
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Graduate Why Is the K/r^2 Formula Incompatible with Special Relativity?
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Graduate Gravitational Paradox: Solving the Unsolvable
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Graduate Surpassing the speed of light? Why not?
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Graduate The Mysterious Synchronization of Clocks in Special Relativity
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Graduate What is the transformation law for tensor components in differential geometry?
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Graduate Directional Derivative of Ricci Scalar: Lev-Civita Connection?
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Graduate Is this magnetic wormhole really a wormhole?
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Graduate Partial Derivative of x^2 on Manifold (M,g)
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Graduate Questions on tensors in GR and the Newtonian limit
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Graduate Closed system Energy transformation
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Graduate Every event is simultaneous with you at some time: proof?
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Graduate Connection between Einstein-Cartan and "Baby Universes"
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Insights Relativistic Work-kinetic Energy Theorem - Comments
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Graduate In c-v what is v, the train's speed relative to?
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High School Machian Relativity: New Theory Glyn Phillips Can't Disprove
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Graduate Computational General Relativity
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Undergrad Calculating the Riemann Tensor for a 4D Sphere
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Graduate Puzzle of negative result of Michelson Morley experiment
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Graduate What is a nonscalar curvature singularity?
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Graduate What Happens When Your Spaceship Is Longer Than the Universe?
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Graduate Could extreme time dilation ever be directly observed?
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High School Bell spaceship paradox - qualitatively
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Graduate Bell spaceship paradox quantitatively
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Insights A Short Proof of Birkhoff's Theorem - Comments
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Graduate Question regarding a twin paradox related example
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Graduate Definition for curvature of worldline in Minkowski space
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High School Extreme Gravity Waves: A Phenomenon That Can Alter Time on Earth
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Graduate Faster Than Light: Nullifying Mass with E=MC2
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Graduate Why are massless photons affected by gravity?
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Undergrad Gravitational Effect: 2 Masses N, 2 Larger Masses Further Apart
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Graduate Can Time Stop in a Gravity-Free Space?
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Undergrad Time Conundrum: Angel vs Man View
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Graduate Why is gravity but not EM 'ripples' in spacetime?
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Insights Centrifugal Force Reversal Near A Black Hole - Comments
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Undergrad Why the speed of light is constant?
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Graduate How quickly does a change in gravity affect its surrounding?
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Graduate Relativistic Doppler and Hubble's law
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Graduate Curvature of spacetime inside hollow sphere
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Graduate Time dilation and speed of light
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Undergrad ?Understanding Special Relativity: Speed Addition & Subtraction
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Graduate Difference Between Special & General Relativity
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Undergrad Question about gravity and speed of light
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Graduate Why is it that light has momentum?
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Graduate Why does warping space time still violate causality?
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Graduate Why is Gravity Sensitive to Absolute Energy?
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Graduate Finite tidal forces at black hole event horizon redux
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Graduate What Are the Key Insights on the Newtonian Limit of General Relativity?
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Graduate Spaghettification near event horizon
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Graduate Can Light Orbit a Massive Object?
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Graduate What's wrong with a flat, empty, and expanding universe?
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Graduate Are time dilation experiments conclusive?
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Graduate Exterior derivative of hodge dual
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Graduate Geodesic Transport of Small 2D Surface on 3D Manifold
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Graduate Geometric representation of a tensor
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High School How did spacetime pop out into existence?
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