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.
High School Creating Artificial Black Hole: Force Requirements
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High School Robert Wald's General Relativity: Energy-Momentum Relation
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Undergrad Proof of Special Relativity w/ Michelson–Morley Experiment
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Graduate Alcubierre Metric: York Time Cause and Effect
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Undergrad Light speed independent of source
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Undergrad Understand Poynting Density of Flow of Energy w/Weak Physics Background
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High School Frequency of Gravitational Waves: Limit & Possibilities
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Graduate Does Spacetime Absorb Energy in General Relativity?
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Graduate MTW Gravitation: Exercise 5.1 | Beginner GR Stress-Energy Tensor Symmetry
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Undergrad Relative Motion vs. 'Relative' Acceleration: Twin 1 & 2
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Undergrad Reichenbach Synchronisation: Proving i=r
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Undergrad A paradox for two moving protons?
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Graduate Local phase invariance of complex scalar field in curved spacetime
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High School General Relativity: Action & Reaction in Gravitation
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Undergrad About global inertial frames in GR
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High School Creating a Wormhole: Process & Theory
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High School Can Push Travel Faster Than Light?
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Undergrad Gravity on the Moon vs. on the spinning Earth
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High School Gravity vs Acceleration: The Impact on Clocks in Reference Frame R
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Undergrad Why does a body at rest move if Gravity is not a force?
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High School Gravitational Force acting on a massless body
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Undergrad Relativity paradox: rocket landing in a cylinder
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Undergrad Deriving Lorentz Transformations: Hyperbolic Functions
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Undergrad Discussing General Relativity - Beliefs & Ideas
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High School A difficulty with the equivalence of all inertial reference frames
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High School Black Hole Entropy: Basis of Logarithm Explored
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Graduate Energy-Momentum Tensor for 2-Body Problem: Approach
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High School Can You Become a Black Hole from Approaching Light Speed?
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Undergrad Understanding Lorentz Factor & Proper Time Invariance
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Graduate What is the Expression for the Waveform of an In-Spiralling Compact Binary?
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Undergrad Computing Volume in General Relativity: Use of Tensor & Friedmann Eqns
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Undergrad Understanding Gravity with GR: Beginner's Guide by Aerodyn
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Undergrad Does Lorentz invariance imply Einstein's synchronization convention?
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Insights Understanding the General Relativity view of gravity on Earth - Comments
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Graduate Special Relativity: A^μ_ν Differences Explained
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Undergrad Can Gravity Escape a Black Hole?
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Undergrad Proper Time & 4-vectors: Clarification Needed
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Undergrad Is a Manifold with a Boundary Considered a True Manifold?
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Undergrad Curved space and gravitational waves
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Undergrad Klein Gordon Invariance in General Relativity
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Undergrad Definition of "Spatial X Direction" in Spacetime Context
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Undergrad Cauchy Stress Tensor in Applied Strength of Materials
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High School Traveling outside of the Earth's atmosphere
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Undergrad Question on the space shuttle Challenger experimentation, in 1985
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Undergrad Adapting Schwarzschild Metric for Nonzero Λ
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Graduate Vec norm in polar coordinates differs from norm in Cartesian coordinates
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High School Light Speed in Vacuum: Does It Reach Cosmic Limit?
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High School Constant Speed of Light: Low Speed Explained
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High School Experience Travel on a Photon: Hitch-Hiker's Guide to the Universe
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High School Can We "See" Effect Before Its Cause?
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High School Time and Space Distortions of Photons: What Am I Misunderstanding?
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Undergrad Time Dilation along Multiple Axes
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Graduate Understand (k,l) Tensors in Gen. Relativity
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High School Time Dilation: 2 Clocks in Same Ref Frame?
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Undergrad Essential Math Topics for GR: Semi-Riemannian Geometry (Newman)
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Undergrad Atomic Clock Exp on Ballistic Flight: Proving Clocks are Accelerometers
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Undergrad Measuring Light Reflection in a Black Hole
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Undergrad Is the Fizeau-Type Experiment Valid for Measuring the One-Way Speed of Light?
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Insights Introducing Relativity on Rotated Graph Paper: A Graphical Motivation
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Undergrad Spin (or not) of a Kerr Black Hole
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High School Help Me Determine Validity of Time Dilation Formula
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Graduate Max Force Debate: 2 vs. 3 Papers in Favor/Against
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Undergrad In what formation does this simple block universe exist?
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Undergrad Lorentz transformation of the Gravitational constant
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High School Confusion in notation of Lorentz Transformations
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Undergrad Simultaneity of accelerated clocks
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Undergrad Can Hypothetical Velocities Exceed the Speed of Light?
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Undergrad Precausality and continuity in 1-postulate derivations of SR
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Undergrad Is Erik's Paradox Challenging Our Understanding of Gravity and Light Speed?
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High School Is the relativity of simultaneity more than just a fudge factor?
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High School Is there a frame where you die before you are born?
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Undergrad Learn Physics with Eigenchris: Relativity & Tensors
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Undergrad Is There Experimental Evidence That Contradicts Time Contraction Predictions?
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Graduate I can't verify a relationship between cofactor and determinant
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Graduate Derivation of Equation 26 in Bardeen's Four Laws of Black Hole Thermodynamics
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High School Black hole at the beginning of time
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Undergrad Gamma - A Minkowski Spacetime Diagram Generator
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Graduate Finding Event Horizon & Ergosphere: Derivations & Formulas
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Undergrad Finding Riemann Components: Packages & Solutions
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Undergrad Links between the Lorentz equations and SR/GR
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High School Any plausible explanation for dynamical length contraction?
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Insights The Schwarzschild Geometry: Part 3 - Comments
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Undergrad Gravitational force equation derived from GR
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Insights The Schwarzschild Geometry: Part 1 - Comments
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Graduate Dustball Collapse & Evaporation: No Black Hole Singularity
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Undergrad Schwarzschild Radius vs Event Horizon: Black Hole?
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Undergrad Clock synchronization for ring-riding observers on rotating disk
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Undergrad Black Hole Waterfall Analogy & Light Speed
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High School What is dTau? The Role of dTau in Measuring Time on a Worldline
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Undergrad Special Relativity: Grokking for a Female Neurobiologist in her 60s
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Undergrad Andrzej Dragan's "Course on Relativity" Videos | YouTube Playlists
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Insights How to Study Fermi-Walker Transport in Minkowski Spacetime
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High School Accurate Visualization of GR - Science Clic
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Undergrad Index notation for inverse Lorentz transform
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Undergrad Ta-Pei Cheng's "Relativity & Cosmology" Course on YouTube
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Undergrad Calculate Ricci Scalar & Cosm. Const of AdS-Schwarzschild Metric in d-Dimensions
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Undergrad Help Deriving Geodesic Equation from David Tong Notes
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Graduate Time Dilation in Reissner-Nordström Metric: Even or Odd?
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Undergrad Raising/Lowering Indices w/ Metric Tensor
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High School Why is Light Speed Invariant & Finite?
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