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.
A What Are the Must-Read Einstein Papers on General Relativity and Beyond?
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I How Do Interparticle Interactions Affect Buoyant Force in Gases?
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I Linearising Christoffel symbols
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I Intuition regarding Riemann curvature tensor
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I Lie dragging vs Fermi-Walker transport along a given vector field
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A Negative energy in Hawking radiation
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A Where exactly is the wormhole in the Kruskal-Szekeres diagram?
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I Does the Alcubierre drive shorten distances?
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B A well defined thought experiment
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I Lentz superluminial solution, anything new on it?
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B Question about the relative motion of an eye relative to light source
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B Why Do Bob and Alice Disagree on Astronomical Measurements?
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I From our reference frame, how would a black hole ever form?
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I Kerr disputes singularities in Kerr Black Holes
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B Understanding the Twin Paradox: Simplifying with a Clear Experiment
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Model for Gravity -- What mechanism distorts space in the real case?
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I Is the instantaneous collapse of the wave function frame dependent?
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I 3+1 split of the Electromagnetic Tensor and Maxwell's Equations
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I Calculation of Lie derivative - follow up
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I Clock Synchronisation -- Do clock speeds go out of synch?
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I How Does Mass Loss from Black Hole Mergers Affect Orbits?
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B Clock synchronising by clock transport?
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I Variation of matter action under diffeomorphism (Carroll)
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I Does SR Length Contraction Halve Space Travel Time?
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I Numerical Relativity -- Software to solve the Einstein field equations?
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I Black Holes in Curved Spacetime
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I Discover the Relationship Between Mass and Energy in Electromagnetic Fields
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I Supermassive black hole, surface gravity and tidal forces
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I Spacecraft With Solar Mass Energy Equivalent Kinetic Energy
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I Relativistic Lagrangian of a particle in EM field
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B Does shortness from length contraction have a real physical effect?
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I Relativity: the Special and General theories
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I Integral curves of (timelike) smooth vector field
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I Wald synchronous reference frame proof
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B Space Pulled into Gravity Well: What Happens?
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B Changing frames in the twin paradox?
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I About global inertial frame in GR - revisited
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B Does a hot coffee have bigger mass than a cold coffee?
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B What does the term "age" mean in descriptions of the twin paradox?
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I Why Must Pure Force Depend on 4-Velocity?
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B Any Feasible Faster-Than-Light Interstellar Travel?
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B Redshift of a light pulse between 2 accelerating rockets
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I Do any real macroscopic black holes have a singularity?
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A Photon speed for an observer at the photon sphere
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I Terrell rotation is confusing!
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I SR textbooks discussing accelerated reference frames without delving into GR
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I Speed of Light Could be Reached and Indeed even Exceeded
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B Can a Gravitational System be Treated as a Single Curved Spacetime?
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A Extra (boundary?) term in Brans Dicke field equations
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I Congruent worldlines in "static" gravitational field
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I Curved spacetime and measurement direction
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B Relative rate of clock ticks on the radius of a rotating disc
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I Minkowski metric and proper time interpretation
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I Special Relativity: an ideal experiment
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I Understanding Relativity of Simultaneity in Resnick, Part II
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I Smooth coordinate chart on spacetime manifold
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I Reference systems and apparent counter-explanations on Twin Paradox
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I Understanding Relativity of Simultaneity in Resnick, Part I
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B How quickly does the Earth feel the effects of a halved Sun's mass?
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I Is the Kroneker Delta Identity Used Correctly in this Paper?
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I Paradox of the car and the driver in SR
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I Doubts about the relativistic description of electrical interactions
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I How Does Special Relativity Affect Perceptions of Simultaneity?
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I How many meter sticks are there in this length contraction reasoning?
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B What Is Relativity Theory in Simple Terms?
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B Measuring the speed of light on moving systems
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I What causes the magnetic force in a uniform magnetic field?
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I Can gravitational lensing detect Very small deviations in light propagation?
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I Can we choose different functional forms for Lorentz transformation?
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I ##x'=0## and ##t'=0## axes in railcar thought experiment
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I Question: Interpretation of Current and Magnetic Field Using Relativity
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I Ricci notations and visualisation
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I Why Do Some Events in My Lorentz Transformation Appear Incorrect?
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I Coulomb gauge Lorenz invariant?
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I Question about gravity being a distortion of spacetime
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B Is the Speed of Light Consistent Across Rotating Reference Frames?
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I Integrate time dilation with derivative
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B Does Time Move Slower for Travelers in Special Relativity Experiments?
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B Difference between special relativity and redshift?
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B What is the general transformation formula for uniform proper acceleration?
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A How can I calculate the square of the Pauli-Lubanski pseudovector?
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I Sagnac gyroscope affected by linear acceleration?
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B Cosmic expansion and shock waves
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I Non-commutativity of unit polar bases
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I Recast of a conformal line element
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B Speed of separation of two masses
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I Suggestion for 2 more GR tests
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A Electrodynamics of moving bodies - §2: On the relativity of... (again)
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I Is a Gravitational Field Real or Just a Coordinate Transformation Artifact?
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I Time intervals measured by stationary and moving observers
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B How do space and time fuse together to form “spacetime?”
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I Question about the Minkowski diagram
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I Twin paradox, virtual clock on ship with Earth time, discontinuity
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I How Can I Design an Experiment to Ensure Simultaneous Light Arrival?
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I A Hidden Zero in Einstein's Simple Derivation
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I Observation of the effect of gravity on the motion of antimatter
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I The Mirror Paradox: Exploring Special Relativity Theory
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I Why are Kruskal coordinates related to a freely falling observer?
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I I think the special theory of relativity self-contradicts
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I Ricci Scalar For Astronomical Body
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