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.
Graduate How to measure absolute velocity
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Graduate Mass transfer between black holes
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Graduate Is the Universe Limited or Infinite? Exploring the Debate
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Undergrad Born Rigid Motion - references
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Graduate Lorentz invariance and General Coordinate transformations
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Graduate Clock Synchronisation in Stationary and Accelerated Frames
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Graduate How Does Gravity Influence Spacetime and Time Dilation?
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Graduate Are Scaled and Summed Four-Vectors Still Four-Vectors?
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Graduate Q: Special Relativity: Moving Light w/ Mass & Reference Frames
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Undergrad Twin Paradox: Jerry vs Tom's Time Dilation
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Undergrad A question on special relativity
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Graduate Is the Speed of Light Really Slowing Down?
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Undergrad Bending of Light: Other Observations Beyond Eddington
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Graduate Ehrenfest Paradox: Explained in Simple Terms
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Graduate Does GR say anything about solid angle deficit?
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Graduate Momentum in the time direction
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Undergrad Is Light's Gravity Influenced by Other Light?
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Graduate How Does Relative Motion Affect Time Measurement in Different Reference Frames?
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Graduate Is there a peak in the center of a GR space-time well?
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Undergrad Does E=mc² fully account for an object's total energy including kinetic energy?
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Graduate Energy, Heat & Speed: A Physics Q&A
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Would Hitting a Micro Black Hole with Your Hand Create a Hole?
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Undergrad Are Photons Massless But Still Have Momentum?
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Graduate Questioning Zero Reference and the Expansion of the Universe
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Graduate Light Speed Travel and Causality
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Graduate Size of Black Hole: Swallow 1.5m x 3.585m x 20cm?
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Graduate What Defines the Coefficient of Restitution in Relativistic Collisions?
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Graduate Not to defend Phrak, but i have a related question
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Graduate Length contraction v. time dilation
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Graduate How Do New Space-Time Coordinate Transformations Impact Clock Synchronization?
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Graduate More Spacecraft Velocity Anomalies
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Graduate A question regarding length contraction
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Graduate Unifying Gravity and Time: Insights from General Relativity & Quantum Mechanics
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Graduate ModifiedGravity.htmlWhat are the limitations of General Relativity?
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Graduate Crossing Event Horizon of Black Hole: What Happens?
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Graduate How Does a Clock Measure Time?
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Graduate Is Time Dilation a Result of Matter's Intrinsic Motion?
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Graduate Can You Escape the Gravitational Pull of a Black Hole?
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Graduate Meaning of diffeomorphism invariance?
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Graduate What is Relativistic Heat Force? Any Research Papers on This Topic?
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High School Does a dimension have dimensions?
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Undergrad Photon Mass: h/(lamda*c) Explained
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Graduate Understanding Time and Space as One entity.
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Graduate Coordinate acceleration without a Force
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Graduate Deriving gravitational redshift using the energy change approach
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Graduate Two-spaceship paradox This solution incorrect
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Graduate Maximum speed of anything, temperature
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Graduate So what has happened to the GPE (Gravitational Potential Energy)?
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Graduate Problem with thought experiment
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Undergrad Is Magnetism Related to Einstein's Relativity?
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Graduate Ricci tensor equals a constant times the metric
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Graduate What's wrong with Michelson's explanation of ether dragging?
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Graduate Gravity: real force or artefact of acceleration?
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High School Does Gravity Move Off? Your Answers Needed
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Graduate Does Pi Relate to Space-Time's Curvature?
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Graduate Time Dilation: Understanding the Effects of Special Relativity
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Graduate Deriving ds^2 = ds'^2 in Special Relativity
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Graduate Relativity: Absolute Acceleration & the Twin Paradox
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Graduate General Coordinate transfos vs Lorentz transfos in GR
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Graduate Is light travel time for event time calculation usually implicit?
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Undergrad How Do Black Holes Exert Gravity If They Absorb Light?
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Graduate Revisiting the lesson of the Relativity of Simultaneity
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Graduate What is the answer to the Twins Paradox confusion in relativity?
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Undergrad Deflection angle of a ray grazing the sun
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Graduate Locality, Time, Speed, Distance, and one confused person.
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Graduate What Units Should Be Used for the Left Half of the GR Equation?
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Graduate Understanding the Twin Paradox and Time Dilation in Relativity Theory
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Graduate Does a Photon Have a Lifespan?
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Undergrad Why Is Time Considered the 4th Dimension in Einstein's Theory?
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Graduate Can a Single Particle Move Without a Reference Point?
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Graduate What Does the Curvature of Time Look Like in Our Perception?
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Graduate Derivative of the metric tensor
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Graduate Einstein's Derivation, why is light velocity c-v and c+v?
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Graduate Maxwell vs Newton: Contradictions in Electrodynamics and Mechanics
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Graduate Doppler Effect and absolute simultaneity
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Graduate Energy-momentum for a point particle and 4-vectors
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Graduate Two questions about the ADM formalism
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Graduate Solve Absolute Simultaneity with Einstein's Procedure
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Graduate Where Can I Find a Review of Relativistic Thermodynamics?
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Graduate Can Someone Help Me Better Understand the Relativistic Origin of Magnetism?
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Graduate FTL travel: Do you think we can do it?
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Graduate Confusion about signal latency vs true relativity
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Graduate Space-Time Curve in Black Holes: What Does It Mean?
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Graduate Energy-Momentum Tensor: Exploring Einstein-Hilbert Action
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Graduate Show Lorentz invariance for Euler-Lagrange's equations- how?
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Graduate Why do people insist on the graviton
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Undergrad Hypothesis about speed of light
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Graduate Unraveling the Concept of Relativity: Understanding Light and Time
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Undergrad Relativity Questions: Answers for the Beginner
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Graduate Gravity, cause or effect of time dilation?
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Undergrad Why Does the Speed of Light Remain Constant When Moving in an Airplane?
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Graduate Is there a relation between GCT and Lorentz invariance?
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Graduate How infinite does time get by gamma
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Graduate Understanding Notation in Hawking and Ellis: V_{(c;d)} and V_{[c;d]}
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Graduate A question concerning the lorentz transformation derivation
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Graduate GR explanation of Newtonian Phenomena
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Graduate How can the Riemann tensor help me calculate the bend in space-time?
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Graduate The classical aether vs. the modern vacuum
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Graduate Apparent position and light travel time
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Graduate Question on Special Relativity.
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