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 Is there any reason for tensor indices being ordered one way or the other?
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Graduate Is the Grandfather Paradox a Flaw in Time Travel's Cause and Effect?
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Graduate Time Travel: Will it ever be possible, how soon, how far, etc.
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Graduate Can Special Relativity Predict Gravitational Effects?
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Undergrad Surpassing the speed of light.
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Graduate Change in internal energy => change in rest mass
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Graduate Why Do We Use the Speed of Light to Measure Time in Minkowski Space?
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Graduate Local lorentz tranformations of fermion action
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Graduate Special Relativity/Lorentz Transformation Derived in two minutes
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Graduate Speed of light in NON-inertial frames
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Graduate Lorentz factor equal to infinity + lots of questions
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Graduate Light implying consistency between QM and SR
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Graduate Another relativity check please.
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Undergrad Is Gravity a function of mass or density
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Graduate How do you derive E2= (pc)2 + (mc2)2
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Undergrad Lorentz Transformations Question
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Undergrad Does a photon have energy density?
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Graduate The Double Slit Experiment from a Photon Point of View
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Graduate Question on lorentz transformation equations
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Graduate Why is it a problem that gravity is so much weaker than the other forces?
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Graduate Doubts about Einstein Field Equations
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Graduate What software is commonly used for solving problems in relativity?
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Graduate So, the question is: Is the concept of a function contravariant?
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Graduate Help With Raising and Lowering Indices
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Graduate Does Time Variation Necessarily Imply Full Spacetime Metric?
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Graduate Does general relativity allow for faster than light travel?
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Graduate Gravitation #3.14: Showing dF=0 as Geometric Version of Maxwell's Equations
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Undergrad Could the Speed of Light Have Changed Throughout History?
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Undergrad A little confused about how Relativity works?
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Graduate Is it Possible to Travel Faster than the Speed of Light?
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High School The Mystery of c^2 in Einstein's Famous Formula E=mc^2 Explained
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Graduate Relativistic particle in Coulomb potential - any analytic solution?
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Graduate Ideas to Exceed Light Barrier: Share Yours Here
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Graduate Photons in a Box Contribute Weight
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Graduate Problem with fluid mechanics part of GR derivation
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Graduate Is Velocity Addition in Special Relativity Contradictory?
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Graduate Energy conservation and universe expansion
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Undergrad A question about reference system and time dilation
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Graduate Currently understand by parallel transport
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Graduate How Might GR and Mach's Principle Explain Cosmic Redshift?
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Graduate Mirror Questions: Q1, Q2 & Q3 - Reflection Effects
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Graduate General relativity does not seem to address gravity
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Graduate General formula for space-time distortion?
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Graduate Is it possible to determine absolute speed?
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Graduate Relativity train and clock synchronization
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Graduate How does thermal energy affect rest mass in Relativity?
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Graduate Is Centrifugal Force Real or Fictitious?
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Graduate Some technical questions about Birkhoff's theorem
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Undergrad How we transform enery into mass?
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Undergrad F = ma doesn't work when aproaching c
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Graduate An example of moving towards a light source
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Graduate How did Einstein Use Minkowski Spacetime to Derive E=mc2?
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Graduate Tangent space vs. Vector space
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Graduate From special to general relativity: why?
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Graduate Do photons age? Do they remain stationary in x4?
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Graduate Break Speed of Light: What Happens Next?
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Graduate Solving Lorentz Transformations for Light Speed c
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Graduate Time dilation inside the second horizon of the BH
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Graduate Phase vs group vs signal velocities
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Graduate Taylor & Wheeler on Thomas rotation
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Graduate Distance & Time Light Travels in Approaching Mirrors Problem
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Graduate Experimentally probing the photon's reference frame
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Undergrad When is the spacecraft arrival detected?
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Undergrad Why time is a separate physical quantity
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Undergrad Time dilation or time relativity?
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Graduate Verifying Equation for Particle Energy (E): p=γpmv
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Graduate Reframing and further acceleration
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Graduate CTCs Violate No-Cloning: Implications for QM & GR
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Undergrad The Smallest blackhole possible?
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Graduate Minkowski Space Basics: Time, Light Speed & Purpose
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Graduate Can an electric switch function differently at relativistic speeds?
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Graduate Travelling at 0.5c or .43c? Unraveling the Mystery
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Graduate The Relativity of Velocity: Mass, Time, Length & Speed
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Graduate Proving Change in Volume V(t) of Sphere in Free Fall
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Graduate Is Time Dilation Just an Illusion?
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Graduate Is Event Sequencing Relative in the Theory of Manifolds?
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Graduate Is Einstein's Gravity Theory Overly Simplistic in Explaining Space Curvature?
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Graduate Everything depends on gravity and mass
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Graduate The Speed of Gravity: Debated Answers
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High School Need help understanding something. About light speed - Thanks
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Graduate Understanding the Spacetime Fabric
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Graduate Minkowski-minkowski thin shell paradoxon?
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Graduate Causality in GR (was Is event sequencing relative? )
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Graduate Alternative Lagrange's Equations
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Graduate How Spacetime is Stretched/Compressed: Experiments?
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Graduate Cosmological Redshift in FRW Coordinates – Energy Conservation & Time Dilation
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Graduate Repositioning clocks: continuing from the switch paradox
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Graduate Help with Lorentz Transformation
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Graduate What Defines a Null Coordinate in Spacetime Metrics?
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Undergrad Understanding Einstein's Theory of Relativity
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Graduate What Would Happen if Usain Bolt Ran at the Speed of Light?
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Graduate Layman's doubts about Gen Relativity
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Graduate Nothing can travel faster than light
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Undergrad What Would Happen if an Object Fell in a Vacuum?
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Undergrad Noob question: If you travel as fast as light, time freezes so
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Graduate Brown's derivation of Thomas rotation
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High School What was the motive of michelson morley experiment
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Graduate Why is the first term on the right-hand side of this equation transposed?
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Graduate How Does a Cosmic Ray Measure Temperature Changes in the Sun?
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Graduate Mass increase from high velocity Q
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