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 Gravitational Field Strength of 1
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Undergrad Can someone falling into a black hole see the entire future of the universe?
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Graduate Reference book for ADM formalism
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Graduate Looking for sources for deprecation of relativistic mass
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Graduate Explanation of time dilation due to c being the maximum speed
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Graduate Speed of light relative to observers?
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Graduate Time Dilation at ISCO for Kerr Black Holes
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Graduate Time in Relativity & Quantum Mechanics: A Philosophical Perspective
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Graduate Ergoregions and Energy Extraction
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Undergrad What's the fate of neutrons in black hole formation?
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High School Randall Munroe Explains General Relativity
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Undergrad Relativistic Doppler Effect: Explaining the Equation
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Undergrad Is X's Clock Really Slower Than Y's in the STR Argument?
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Undergrad Andrei Lebed: Hydrogen Spectral Transitions Without Gravity
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Graduate What is the difference between Boost and Translation?
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Graduate Does the Circular Twin Paradox Challenge Our Understanding of Time Dilation?
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High School Relationship between Mass and Speed of Light
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Graduate Eigenvalues of curvature tensors as curvature scalars?
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Undergrad Diffraction Redshift and Emission Theory
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Graduate Time & The Special Theory of Relativity
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Graduate Can Gravitational Binding Energy Cause Negative Effective Mass?
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Graduate Hawking radiation no change to black hole mass?
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High School Speed of Light & Thought Exp: How to Send Info 186K Miles Instantly
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Graduate Question about Purcell - Electricity and Magnetism
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Graduate Is Hawking's statement of Raychaudhuri's equation wrong?
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Graduate What is Einstein's Hamiltonian for the Gravitational Field?
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Undergrad What is the structure of a photon and can it be observed?
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Graduate Unpredictable Outcomes: What Happens When Falling into a Black Hole?
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Graduate Singularity Theorems: An Accessible Reference
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Graduate Does temperature in special relativity depend on the frame of observation?
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Graduate Time Travel: How Far & Fast to Reach Alien Neighbors?
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High School Deriving GR without EFE: Could it be this Simple?
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Graduate Observer Falling Into a Black Hole -- What do they see?
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Graduate Faster Than Light Communication Through Space-Time Bubbles
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Graduate Ergosphere and angular velocity
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Graduate Proof than an equation is Lorentz invariant
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Undergrad Theory of Relativity & Gravity: Is Space Pushing Us to Earth?
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Graduate Conservation laws with Killing fields
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Graduate Does E in E=mc^2 Include Gravity?
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Graduate Relativistic Lagrangian and Hamiltonian for a free particle
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Graduate Time Distortion at High Altitudes: Is Now Still Now?
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Graduate Observer dependent event horizon for Schwarzschild black hole
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Graduate Action and reaction when fast object is pushed
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Graduate Signal time in Twin Paradox: Fast clocks? Redshift/blueshift
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Graduate Integration by parts in curved space time
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Graduate Curvature singularity with well-behaved Kretschmann scalar
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Graduate Fun with Carminati-McLenaghan invariants
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Graduate Can electron be considered a Source of gravitational field?
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Undergrad Faster than the speed of light?
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Graduate What time dilation do muon observers experience?
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Undergrad Twin Paradox: Relation between Age and Speed of light .
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Graduate Kinetic energy of a spinning body
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Undergrad Does continuous acceleration eventually create a black hole
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Graduate Local Inertial Frame in General Relativity - Neutrino
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Graduate LISA Pathfinder Launch on Dec 2: Einstein's Last Theory
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Graduate Uniformly accelerating frame of reference
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Graduate Calculate Time Dilation for Space Travel w/ Formula
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Graduate Time Dilation: Rel. Ref. Frames and Universal Reference Frame
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Graduate Curvature polynomials vanish for plane waves?
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Graduate How did Einstein know speed of gravity?
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High School Time Dilation for Slower Objects - Physics Explained
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Undergrad Is it time to "retire" time dilation and length contraction?
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High School Inside the Moving Truck: A Fly's Dilemma
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Undergrad Basic Questions on Time Dilation Implications
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Undergrad Why Is the Proportionality Constant in E=mc² Just c²?
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Graduate Relativistic Speed Travel: What is the Effective Speed?
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Graduate Speed of an object in a rotating frame
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Graduate Relativistic Euler Equation in Spherical Coordinates
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Graduate Twins flying at the speed of light in opposite directions
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Graduate Could you express GR in terms of a density of spacetime?
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Graduate Warp drives and event horizons
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Insights The Block Universe - Refuting a Common Argument - Comments
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Graduate Relativistic momentum (Lorentz boost) low velocity limit
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Graduate Metric in polar coordinate derivation
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Undergrad Invariance of Acceleration in Inertial Reference Frames
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Graduate Abrahams-Minkowskii Controversy: Is Phonon Momentum Defined?
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Graduate Could Time Be Warped Alongside Space in Sci-Fi Travel Scenarios?
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Graduate Relativistic Particle Decay: Momentum Conservation
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Graduate Advantage/disadvantage of notation
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Graduate Suggested Reading on Newtonian vs Relativity?
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Graduate Humans Move Before Becoming Black Hole
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Graduate Contracting Riemann tensor with itself
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Graduate Color of light in the Light Clock
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Graduate Faster than light - under what circumstances?
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Graduate What can be said about S-T global properties from the EFE?
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Graduate Trans-Planckian Problem for Black Holes: Do Infalling Particles Become BHs?
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Graduate Conservation of angular momentum and RoS
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Graduate Affine Connection Γ in Terms of Tetrad: Help Needed
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High School How does GR explain increase/decrease in speed?
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Graduate Why isn't length contraction permanent even though time dilation is?
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Graduate What Led Einstein to Connect Light and the Speed of C to E?
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Graduate Revisiting Einstein's Train Experiment: Unraveling the Mysteries of Relativity
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Graduate Accelerated expansion and perceived gravity
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Graduate Karl Schwarzschild's 100th Anniversary: No BH Event Horizon
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Graduate Invariance: What Does it Mean?
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Graduate Relation between affine connection and covariant derivative
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Graduate Singularity of spacetime/singularity of the riemanian tensor
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Undergrad Twin's Paradox: Who is Older A or B?
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Graduate Why can't light return from a black hole?
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Graduate Universe Hubble radius equal to Schwarzschild radius
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