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 How to derive irreducible representations/tensors?
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Undergrad How does an observer moving at relativistic speeds perceive a pulsar?
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Undergrad Is There an Atomic Clock Experiment on the Moon Testing Relativity?
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Undergrad Relevant/irrelevant clocks for experimental tests of relativity
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Undergrad Atomic Clock Speed graph between two stationary masses
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Undergrad Event Horizon movie, with some interesting concepts (papers cited)
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Undergrad Any advancements in the feasibility of Alcubierre warp drive science?
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Undergrad Stress-energy tensor and energy/momentum conservation clarification
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Undergrad Why is there nothing faster than light?
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Undergrad Constancy of Speed of Light: Postulate or Assumption?
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Undergrad Radiatively efficient accretion onto BHs
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Undergrad Time Measurement in Extremely Curved Space Regions
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Undergrad Mass Density of Photons in Refractive Medium
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Undergrad Taylor Expansion of Metric Transformation in RNCs
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Undergrad Compatibility of Classical Electromagnetism & Relativity
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Undergrad 3 clocks thought experiment - Absolute vs. relative aspects?
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Undergrad Locally Inertial Frames: Freefall & Relative Velocities
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Undergrad Adler's New Book on Relativity: Misprint on Page 16?
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Undergrad A question about metric compatibility equation
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Undergrad Why do strong fields complicate our understanding of singularities?
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Undergrad Question About Text: Example 4.1 on Page 35-6
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Undergrad Schwarzschild Geometry: Einstein Tensor & Mass Density
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Undergrad How fast does the particle go through spacetime?
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Undergrad Inertial Gravity in Relativistic Geodesics - Forum Discussion
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Undergrad Gravitational field modulation of a moving mass
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Undergrad Numerical Solution of Complex Systems in GR
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Undergrad Sabine Hossenfelder says time dilation is due to acceleration
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Undergrad What is the velocity of a photon through the four dimensions?
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Undergrad Escape from Two Black Holes? Solve the Mystery!
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Undergrad Time Paradox: A & B's Clocks Move Differently
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Undergrad Worldline Curve vs Trajectory: What’s the Difference?
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Undergrad Universe Expansion: GR vs Hubble Reconciled
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Undergrad Can worldlines exist that defy traditional spacetime classifications?
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Undergrad Black holes to explode due to evaporation?
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Undergrad Do objects gain mass while approaching light speed?
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Undergrad Kerr & Nordström Black Hole Evaporation: Q&A
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Undergrad Observed Redshift from Moving Source: Deriving the Result
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Undergrad Gravitational Field Transformations Under Boosted Velocity
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Undergrad Light-Like Separation: Is It Possible?
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Undergrad How to obtain other inverse metrics than that of Schwarzschild?
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Undergrad Has anyone measured the speed of light in one direction?
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Undergrad Dark Energy Strength in Great Voids of Galaxies
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Undergrad Gravitational Field Existence in Void: Philosophical Inquiry
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Undergrad Relativity & Simultaneity Convention: Meaning & Impact
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Undergrad Circular Orbit in Schwarzschild: Orbital Period
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Undergrad Explore Spacetimes, Metrics & Symmetries in Relativity Theory
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Undergrad Error in Concepts: Intro to Mechanics Kolenkow & Kleppner
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Undergrad Can Crafts Reach 2c Relative to Me?
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Undergrad No Symmetry Spacetimes/Metrics in Theory of Relativity
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Undergrad Twin Paradox: Aging Slower with Continuous Acceleration?
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Undergrad Derivation of SR's time-dilatation in 1d?
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Undergrad What Is the Geometrical Meaning of Principal Null Directions?
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Undergrad Schwarzschild in Cartesian: Tricks for Transformation
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Undergrad Differentiate w/ Respect to Affine Parameter
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Undergrad Understanding Einstein's second postulate of special relativity
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Undergrad Solving Paradox: Man Running with Pole Reaches Door Before Button is Pressed
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Undergrad Lack of Symmetry in X & T: Explained for Beginners
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Undergrad Can time be another basis vector under Galilean relativity?
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Undergrad Mainstream interpretation of Newton's bucket argument?
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Undergrad Black Holes: Event Horizon Causally Disconnected?
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Undergrad Solving Spherically Symmetric Static Star Equations of Motion
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Undergrad Time dilatopause for black holes
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Undergrad Doppler Effect on Light: Constant Speed of Light Confusion
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Undergrad Time Dilation Paradox: Geosynchronous Satellites
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Undergrad How to rule out that the speed of light was different in the past?
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Undergrad How meaningful is the notion of now here on Earth?
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Undergrad Effects of time dilation for near-speed-of-light travel
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Undergrad Orbital Precession Calculation: Unit Explained
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Undergrad Can Vacuum Energy Alter Our Understanding of Gravity?
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Undergrad Proof of Lorentz Gauge Existence: Help Understanding Schutz 8.3
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Undergrad Modeling the Earth and Sun (2 body orbits) using general relativity?
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Undergrad Does Special Relativity Change Our Perception of Others?
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Undergrad Conservation of Energy in GR: A-B System Analysis
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Undergrad Light in an accelerated elevator
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Undergrad Muon Decay Example from Morin's Book: Issues Explained
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Undergrad Gravity of the Sun: Einstein's Calculation and Beyond
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Undergrad Why Are the Two Diagrams in the Twin Paradox Not Symmetric?
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Undergrad Train Simulation: Observer A and B Contradiction?
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Undergrad Visualising Torsion Tensor: Is There a Picture?
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Undergrad Special Relativity philosophy and anxiety
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Undergrad Physics Error in Larry Niven's "Neutron Star
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Undergrad Contracting the stress energy tensor
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Undergrad Gravitation Machine Invented? Research Idea
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Undergrad How do angular displacement and rapidity relate in special relativity?
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Undergrad Time Dilation & Aging: Why Do Astronauts Age More Slowly in Space?
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Undergrad How can time only have one direction?
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Undergrad From Einstein Summation to Matrix Notation: Why?
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Undergrad Calculate Length Contraction for Accelerated Motion to Proxima Centauri
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Undergrad SR vs GR: Logical Necessity of Signal Propagation
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Undergrad Arguments leading to the speed of light as a dimensionless constant
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Undergrad Best Derivation of E=mc^2 - Fdx = V^2 dm
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Undergrad Need to resort to spherical wavefront to derive the LTs?
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Undergrad Charge conservation and special relativity
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Undergrad Doppler Shift & Christoffel Symbols Issues
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Undergrad Einstein's General Relativity w/o Cosmological Constant
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Undergrad Gravitational Waves from Vanishing Sun: What Happens?
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Undergrad Understanding Admit & Adapt: Timelike Killing Vector Field
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Undergrad Twin Paradox: Calculating Stan's Time Elapsed According to Moe
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Undergrad Magnetic Field vs Spacetime: Effects on Inertia Disk
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Undergrad Jefimenko's Theory of Gravitation: Continued Discussion
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