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 is a constant. How?
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Graduate Explosion of a moving mass into two parts.
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Graduate Relativity 101: Near speed of light travel
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Graduate Conservation of stress-energy with quintessence
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Graduate Do gravitational waves penetrate black holes?
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Graduate One-way tests of special relativity
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Graduate Distance between fast moving objects
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Graduate Entropy & Relativity: What's the Relationship?
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Graduate A Universe with no Twin Paradox
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Graduate Hawking Radiation inside a Black Hole?
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Undergrad Calculating a Character's Warp Speed in a Book
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Graduate Shape Operator for Schwarzschild spacetime in 2-dim
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Graduate Speed of light shot from behind
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Graduate About quantum entanglement and relativity of simultaneity
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Undergrad Is the speed of light constant in a medium?
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Graduate A few questions about gravity, space, and reality in general
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Graduate Question about gravitational redshift
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Graduate Unified Theory of Dark Matter, Dark Energy from altered EFE
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Graduate Is it possible for a photon lifetime to be complex ?
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Graduate On modified theories of gravity
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Graduate Relativistic Doppler and preferred frame
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Graduate Photon sphere vs horizon as a null suface
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Graduate Effect of cosmological expansion on bound systems in realistic cosmologies
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Graduate Understanding Gravity: Force or Curvature of Space?
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Graduate Particle on a curved trajectory
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Graduate Why does low frequency light appear to travel faster than high frequency light?
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Graduate Question about theorem 2.2.1 in Wald's General Relativity
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Graduate How Does Gravity from Nearby Stars Affect Black Hole Movement?
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Graduate Why does Bailey experiment not show gravitational time dilation?
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Graduate How Do Black Holes Emit Photons?
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Graduate Does Relativity Allow for Faster-than-Light Travel?
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Graduate What is the Doppler effect in different frames of observation?
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Graduate Lorentz invariance of four-volume element [itex] d^4x [/itex]
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Graduate Requesting Clear Description of Contravariant vs Covariant vectors
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Graduate What is zero time between events?
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Graduate Points of reference for time dilation
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Graduate Calculating Velocity of Moving Objects Relative to Each Other
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Graduate Speed of the light and dilation of time
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Undergrad The Motion of Photons: Where Does the Energy Go?
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Graduate Problem with Schwarzschild metric derivation
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Graduate The God Effect and the Black Hole
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Graduate Is superluminal communication impossible according to STR?
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Undergrad How does gravity in space work?
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Undergrad Whenever we increase the velocity of a particle, the mass of he particle also
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Graduate Does BH Event Horizon Reveal Information on Mass, Angular Momentum, and Charge?
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Graduate Observers/observations according to SR
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Graduate Confused about Lorentz Transformations
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Graduate Time dilation in the period of a pendulum
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High School Concepts of time on Earth, Space and on other Planets
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Graduate Gravitational lensing derivation using equivalence principle
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Graduate Relative velocity between two accelerating observers
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Graduate Bohr radius and length contraction
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Graduate Aid to visualizing warped Spacetime?
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Graduate Postulate: EVERY field has a magnetic equivalent.
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Graduate Bianchi Identity-where did I go wrong?
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Graduate Why doesn't hawking radiation prevent a space-like singularity
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Graduate Time reversal in General Relativity, and black holes
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Graduate Need help on an exercise from Gravitation(MTW)
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Graduate Need help MTW's Gravitation exercise 16.1
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Graduate Slow-rotation weak-field limit of Kerr
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Undergrad A typo or I don't understand it?
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Graduate Are Lorentz Transformations Compatible with Lorentz Ether Theory?
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Graduate Faster than the speed of light
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Graduate Relativistic mass, time dilation, length contraction, and traveling near c
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Graduate Can SR be derived from causality alone?
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Graduate Does Time Exist? Science Explains 4 Dimensions & Timelines
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Graduate Understanding Basis Vectors and One-Forms: A Simplified Explanation
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Graduate Universe expansions effect on gravity and Einsteins theory of special relativity
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Graduate Define Black Holes w/o Asymptotic Flatness?
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Graduate Length contraction of distant objects/space, etc
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Graduate Visualizing General Relativity with Fluid Analogy
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Graduate SR question about time dilation/space contraction
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Graduate Understanding Past and Future Light Cones
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Graduate Gaussian Coordinates Explained: Resources & Definition
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Graduate How Does a Photon Experience Space and Time?
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Graduate Photon Rest Mass: How We Know & Mass While Moving
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Graduate Black Hole Time Dilation: Light-ray Interpretation
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Graduate Why is gravity the only force the causes time dilation?
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Graduate Anti-de Sitter spacetime metric and its geodesics
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High School Twin Paradox: Time & Speed Explained
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Graduate Can Information Be Preserved on Closed Timelike Curves?
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Graduate Correct phrasing / use of vocabulary for SR
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Graduate Does Bell's Paradox Suggest String Shouldn't Break Due to Length Contraction?
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Graduate How Do Light Clocks Illustrate Time Dilation and Length Contraction?
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Graduate Why does length contraction only occur parallel to the direction of motion?
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Undergrad Speed of light constant in NON-vacuum?
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Graduate I have been reading a book on hyperspace and again the author has gone
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Graduate Why does Einstein's 1905 SR paper contain Zero citations?
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Graduate Confused about some aspects of GR
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Graduate Relative difference in laws of electrodynamics
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Graduate Physics & Cosmology: Questions about Gravity & Orbital Motion
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Undergrad Was Ruđer Bošković the first one?
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Graduate Question about Einstein inserting the cosmological constant
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Graduate What's being curved, when mass bends the spacetime continuum?
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Graduate Shrinking event horizon to point singularity
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Graduate Does potential energy change mass
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Graduate Questions about the accelerating universe
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Undergrad Thought experiment about time dilation
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Graduate I have a spacecraft that can trave to Alpha Centauri in 1 week
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Graduate Local flat space and the Riemann tensor
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