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 Weak equivalence principle and GR
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Graduate Do the Principles of Special Relativity Require Synchronized Clocks in K and k?
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Graduate Wave vector in curved space-time.
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Graduate Do all gravity waves have the same frequency?
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Undergrad How Does Earth's Gravity Accumulate?
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Graduate Spacetime Interval: Is it Invariant Under Rotations?
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Graduate Is Time Actually Speeding Up in the Expanding Universe?
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Graduate Stress tensor : tension VS Pressure
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Graduate Trace-reverse field in linearized GR
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Graduate Bell's spaceship clarification
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Graduate Is the Lorentz metric compatible with the topology of flat spacetime?
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Graduate Self-interactions in linearized gravity
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Graduate What is the Generalized Approach to Lorentzian Relativity?
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Graduate Why does the bend in space time not affect the gyroscope?
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Graduate A critique of Mike Fontenot's CADO scheme
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Graduate C^2 in Lorentz transformations and special relativity.
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Graduate Basing everything on speed of light
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Graduate Newton's bucket and Galilean relativity
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Graduate Quick question to clear up some confusion on Riemann tensor and contraction
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Graduate Can someone help me understand this paradox please
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Graduate Archimedes principle and relativity
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Undergrad How do Lorentz transformations show the relationship between time and space?
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Graduate Does Anyone Use Newtonian Physics w/ Arbitrary Time Coordinates?
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Graduate Does frequency of light increase if
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Graduate Acceleration of Light ensity of Space
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Graduate Ambiguity in time dilation due to relative velocity
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Graduate How to denote tetrad in Abstract Index Notation ?
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Graduate Is it possible for relative velocity to exceed the speed of light?
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Graduate Local Coordinates for Non-Uniformly Accelerated Observer
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Undergrad The Twin Paradox: Mike & Angela's Frame of Reference
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Graduate Can a beam entering a black hole be used to communicate with the outside world?
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Graduate Do photons experience instant lifetimes?
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Graduate When do we use tensor densities rather than tensors?
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Graduate Is Spacetime Curvature Real? - Take 2
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Undergrad Relativity Books: Advanced Reads for Engineering Student
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Undergrad What is the significance of taking the derivative of y=sin^-1(x)?
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Undergrad Twin Paradox: Explaining Symmetry & Age Difference
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Graduate Does GR fail at the Planck scale?
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Graduate Electron Falling in Kerr Metric: Release of 40% Rest Energy?
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Graduate Can Photons Exceed the Speed of Light in a Gravitational Field?
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Graduate Conservation of angular momentum in GR
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Graduate Einstein's Theory of Relativity & Time: Questions Answered
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Undergrad Anyone here play Portal? Portal + Relativity question
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Graduate New Theory of Spacetime: Is Time the 4th Dimension?
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Graduate Photon gas as medium for electromagnetic propagation
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Graduate How can Block Holes form in finite time?
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Undergrad Help with special relativity (frames of reference)
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Graduate Faster than the Speed of Light
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Graduate Terminology for Doppler shifts
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Graduate Question about C and Relativity
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Graduate Is there a reference frame where our entire life happens simultaneously?
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Graduate A thought experiment for surpassing the speed of light
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Graduate Classical Field Theory without Force
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Graduate Why is the Speed of Light Constant in Time Dilation?
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Graduate Testability of Torsion in Teleparallel Gravity - V.C. de Andrade et al
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Graduate Space-Time Distortion: Matterless Vacuums in Space
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Graduate Deflection angles of photons passing by black holes
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Graduate Equations for length contraction
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Undergrad Deriving the speed of light from the Pythagorean Theorem
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Graduate Constancy of the speed of light.
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Graduate Is (our) future already exists, according to relativity?
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Graduate How does blackhole event horizon grow?
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Graduate Straight Line Case. My paradox. Sorry if I rewrite and start a new post.
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Graduate What Do Seconds Mean During the Big Bang?
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Graduate Why Does the Twin Paradox Not Invalidate the Theory of Relativity?
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Graduate The Shape of the Universe, and General Relativity
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Graduate Why is the Andromeda Paradox flawed according to Penrose's book?
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Graduate Can We See Andromeda in Real-Time Using a Near-Light Speed Telescope?
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Graduate Gravity = warping of spacetime (doesn't make sense)
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Graduate Thought Expirement, Tethered Spacecraft travelling near light speed
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Graduate How to measure speed of light?
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Where can I find Survey of gravitational radiation theory F.A.E PIRANI
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Graduate Twin Paradox (thorough explanation needed)
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Undergrad Relativity Breakdown: Explained for Non-Scientists
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Are Black Holes Truly Fiction? Examining the Evidence
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Graduate Constant acceleration approach? =/
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Graduate TIme Dilation & Quantum Entanglement Question
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Graduate Space-time geometry in the absence of matter
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Graduate Big bang in Robertson - Walker space - time
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Graduate Gravitational waves by analogy with Maxwell's equations
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Graduate Do you have to travel away from the observer for time to slow down?
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Graduate What If Lorentz Invariance Violation Were Detected?
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Graduate Understanding Reduced Mass and its Role in Classical Mechanics
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Graduate Doubt about gravitational waves
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Graduate Relativity and the Heisenberg Ontology
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Graduate Q: if you travel closer to c, will you see length(distance) contraction
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Graduate Rietdijk-Putnam Argument: Free Will, Relativity & The Andromeda Paradox
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Graduate Distance between two points in spacetime
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Graduate Energy Approximation for Small Velocity - Schutz's "A First Course in GR
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Graduate Proving Lagrangian EOM with Non-minimal Coupling
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Graduate Equations of motion por a free particle in curved spacetime
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Graduate Contravariant metric components
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Undergrad Relativistic Space Travel: Fact or Fiction?
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Undergrad What is the kinetic energy of an object traveling at the speed of light?
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Graduate Why is the universe's expansion accelerating despite gravitational forces?
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Undergrad Speed of light not a legitamate factor in relation to mass
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Graduate Understanding the Fall into a Black Hole: A Scientific Analysis
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Undergrad When people talk about the current size of the observable universe
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Graduate Discovering Co-frame Basis Vectors for General Einstein Metric
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Graduate Conservation of Energy Down The Drain?
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