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 Speed of Light: Can We Reach It?
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Graduate How to Calculate the Variation of Quadratic Action for Riemann Tensors?
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Is Time Slowing Down? Scientists Weigh In
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Graduate Is this why relativity and quantum physics don't mix?
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Graduate Time Travel and the Conservation of Matter Problem
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Graduate What Does the r=0 Singularity Represent as an Event at Fixed Time in Spacetime?
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Graduate Gravitational time dilation vs velocity time dilation
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Undergrad Proving Special Relativity Wrong: Experiments & Particles
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Graduate Elementary question - Special relativity
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Graduate What Does Newton's Bucket Paradox Reveal About Motion and Inertia?
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Graduate Stone's derivation of Thomas rotation
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Graduate Integrating an accelerating Worldline
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Graduate Light has mass, and it travels at the Speed of light, so a massless object .
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Graduate Cosmic Relativity: C. S. Unnikrishnan's Reassessment
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Moving though space but not time?
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Graduate Maxwell's Equations in the Light of General Relativity
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Graduate General Relativity and a Force Mediating Graviton?
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Graduate Is this a way to move faster than c?
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Graduate A few simple questions about clocks moving slow relative to observers
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Graduate Is Time a Fundamental Element of the Universe or Just an Illusion?
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Graduate The scope of inertial time dilation?
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Traveling at the speed of light in orbit around a black hole
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Undergrad Why do we have red shift and blue shift, and not only one?
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Graduate Are forces subject to the doppler effect?
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Graduate Satisfies Killing equation, but not a Killing field?
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Graduate Schwarzschild metric not stationary inside the horizon?
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Undergrad 2 spinning or orbitting objects and their effect on time
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Graduate Question about calculating time dilation of clocks at sea level
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Graduate Is Non-reciprocal Time Dilation Possible in This Scenario?
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Graduate What is the significance of the Rubik Group in combinatorial species theory?
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Graduate A beam of light compared to bullet in gun
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Graduate Diffeomorphism invariance and Noether's theorem
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Graduate Length Contraction Euclidean Space
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Graduate How does the energy and time dilation of objects moving at high speeds work?
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Graduate Dimensional Rifts, Windows, Einstein-Rosen Bridge & other Mindbenders
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Graduate Special Relativity and the Particle-Antiparticle Problem
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Graduate Faster Spinning Earth: Gravitational & Centrifugal Affects
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Graduate Is the speed of light always constant in non-inertial frames?
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Graduate General relativity time dilation
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Undergrad Would the other end move instantaenously
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Graduate What Did Fizeau's Experiment Reveal About Motion and Ether?
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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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