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 Subbing Planck length into length contraction equation?
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Undergrad How Do Tensor and Vector Notations Differ in Physics?
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Undergrad Solving Geodesic Equations with Killing Vectors: Is There a General Solution?
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Undergrad Observing Hawking Radiation from Inside a Black Hole
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Undergrad Thought Exp: Light Trapped in Gravity Well of Black Hole
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Undergrad GR & Mercury Precession: Explaining the Diff.
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Undergrad Comparing Black Holes & Contracting Universes
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Undergrad Sticky beads and a simple wave
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Undergrad Relative Velocity Time Dilation: Experiments Disproving Theory?
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Undergrad 'If a photon were trapped between two perfect mirrors....'
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Undergrad Is Space Always Curved, and What Does It Mean for Mass and Time?
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Undergrad Validating a ds^2 Metric in General Relativity
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Undergrad Schwarzschild Radius of All Matter & Energy in Known Universe
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Undergrad How Does Length Contraction Influence Electromagnetic Forces?
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Undergrad Why is energy not Lorentz invariant?
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Undergrad At what point does classical EM become relativistic EM?
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Undergrad Lorentz Transform: Justifying Use in Acceleration
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Undergrad Gravitational Potential Energy: 1/2 Factor Explained
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Undergrad What does the Einstein tensor actually tell you?
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Undergrad Noticing CTC's / time travel in a Godel space-time
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Undergrad Spacetime Metric Topology: Does g Induce O?
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Undergrad Modeling the effects of GW and the "Earth Frame"
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Undergrad Can one determine the velocity of a photon in the fourth dimension using limits?
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Undergrad Conformal transformation of the line element
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Undergrad Alice Sees Sudden Acceleration at Event Horizon
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Undergrad Understanding Relativistically Spinning Disk/Ring: Lorentz Boosts
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Undergrad Effect of Special Relativity on Spacecraft Thrust & Isp
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Undergrad Comparing Gravitational Waves & Post-Newtonian Approximation
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Undergrad What is the Concept of Velocity and Acceleration in General Relativity?
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Undergrad What Actually Happens vs What You See in SR
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Undergrad What is the velocity of the photon through the fourth dimension x4?
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Undergrad What happens during acceleration in time dilation?
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Undergrad What are the independent components of the Riemann tensor
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Undergrad Radar Doppler effect: classical vs relativistic
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Undergrad Christoffel symbols transformation law
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Undergrad Time to Form Black Hole? | Observer Slows Time at Event Horizon
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Undergrad A light wave and a sound wave travelling together
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Undergrad Is Anything Truly at Rest in Every Frame of Reference?
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Undergrad Solving Mass-Speed Relation Proof Challenges
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Undergrad Explain Relativistic Mass: Special Relativity & F=ma
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Undergrad Is gravity really not a force according to the weak equivalence principle?
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Undergrad Godel Solution Metric: Shapes & Descriptions
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Undergrad Past Existence: Can Conjectures Be Tested?
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Undergrad Is There a Mistake in My Understanding of Planck Units and Dimensional Analysis?
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Undergrad Trick for Remembering Schwarzschild Christoffel's/EFE's?
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Undergrad Speed of light and speed of sound both constant
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Undergrad Morris-Thorne Wormhole Metric Terms
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Undergrad Correctly Using Lorentz Transformations: A Special Relativity Problem
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Undergrad Inside Black Holes: Unraveling the Kerr Metric Structure
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Undergrad Uniform acceleration and hyperbola
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Undergrad Could I travel to andromeda in my lifetime?
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Undergrad Stupid question on index lowering and raising using metric
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Undergrad What is an angle deficit in the curved space in GR?
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Undergrad Are There Black Holes in Galaxy Clusters?
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Undergrad LIGO light changes frequency not wavelength
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Undergrad Radio Comm Between 2 Points Diff Gravity: True?
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Undergrad Why can't you use Simultaneity when doing Length Contraction
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Undergrad Need for GR: Historical Indications
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Undergrad Exterior Schwarzschild Solution & Gravitational Time Dilation
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Undergrad Newtonian 4-Momentum Norm Analogue
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Undergrad Cox & Forshaw: Explaining E=mc^2's "Negative" Option
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Undergrad Total Energy of Particle in Potential: SR Explanation
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Undergrad Did the Big Bang separate space and time
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Undergrad Vector Transformation Law and Vector Spaces: Is it Abuse?
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Undergrad Lines of simultaneity in Twin Paradox spacetime diagram
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Undergrad What Does the Ricci Tensor Reveal About Einstein's Field Equations?
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Undergrad Metric for Infinite Rod in Gen. Relativity
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Undergrad Spatial geometry of constant Schwarzschild time hypersurface
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Undergrad Is Flamm's paraboloid a paraboloid?
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Undergrad Action in Relativity: Non-Relativistic vs Relativistic Particles
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Undergrad Deriving EM Energy Conservation from Lagrangian
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Undergrad Relationship between quadratic and square-root lagrangians
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Undergrad Time dilation time travel for novel - I need a calculation
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Undergrad Does the 1 Second after the Big Bang = 1 second now?
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Undergrad Gravitational Lagrangian density
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Undergrad Why does time dilation affect all clocks equally?
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Undergrad Velocity Addition: Physical Meaning of Non-Singularity at c?
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Undergrad Question about cosmological constant
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Undergrad Cosmological Constant Problem: Pre-Req Knowledge for Paper
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Undergrad Minkowski diagrams without scales on axes
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Undergrad Leading and lagging clock times in Lorentz Transforms
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Undergrad Special relativity and magnetism
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Undergrad Wald's Mistake on Einstein Tensor pg 97?
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Undergrad If c changes w/ time, what happens with laws of SR?
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Undergrad Galilean Relativity: Can Experiments Tell Motion Relative to Other Frames?
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Undergrad Book Suggestions: Learn Einstein's General Theory of Relativity
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Undergrad Understanding General Relativity
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Undergrad Friedman-Robertson-Walker metric
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Undergrad Parametrizing a path through spacetime
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Undergrad Holographic Principle discussion in Sean Carroll's book
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Undergrad Meaning of the equivalence principle in General relativity
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Undergrad Gravitational Waves Vs. Aether Wind
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Undergrad Reconciling Simultaneity & Relativity: Navigating the Spacetime Maze
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Undergrad Black Hole & Spacetime Curvature: Can Mass Decrease It?
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Undergrad Time Dilation Explained: Muon Decay & Reaching Earth
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Undergrad SR Pseudo-Paradox: Photons Affected by Emitter?
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Undergrad Time Dilation & Differential Aging: Defined
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Undergrad Could it be meaningful to speak of the "density of space"?
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Undergrad Is there any 2D surface whose metric tensor is eta?
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Undergrad Quantum Mechanics & Relativity: Vacuum Connection?
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