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.
Graduate Stress-energy tensor for a single photon
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Graduate On the nature of the infinite fall toward the EH
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Undergrad Objects Moving Close to Light Speed: Mass Difference?
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High School Gravity Analogy: Why Does Moon Orbit Earth?
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Graduate Faster than the speed of light
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Graduate Can Warp Speed Violate Causality? The Debate Among Physicists
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Graduate Realistic black hole in Friedmann universe
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Graduate Proof for Closure of Vector Addition - Can You Help?
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Undergrad Question about Einstein's train thought experiment
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Graduate Confusion about special relativity
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Undergrad A couple basic spacetime questions.
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Graduate Implications of constant speed of light in all inertial frames
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Graduate General Relativity: Contracting Indices
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Graduate Unveiling the Formation of Black Holes: A Relativity Perspective
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Undergrad What space contracts in Special Relativity?
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Graduate Finding inverse metric tensor when there are off-diagonal terms
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Graduate Tensor Rank vs Type: Explained
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Graduate Spacetime 'loaf' according to Fabric of the Cosmos
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Graduate Solving Confusion about Hans Ohanian's One-Dimensional Gas Example
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Graduate JollyOlly's book 'A Roller Coaster Ride through Relativity'
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Graduate Null Killing Vector & Conserved Quantity - Physics Forums
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Graduate Tensors and General Relativity
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Graduate Unraveling Dirac's General Relativity Equation
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Graduate Transformation to local inertial frame
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Graduate Time Dilation: Current vs Massless Universe
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Undergrad To Saturn at (nearly) the speed of light
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Graduate Point particle in scalar potential
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Graduate 'Crossing' speed: Lemaitre vs. 'dropped' observer
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Graduate Why does light not reach any distance instantly?
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Graduate Full Lagrangian for Electrodynamics: Find ##\mathcal{L}_\textrm{matter}##
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Graduate Open-Source Book on Special Relativity - Free Download
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Graduate How Does 4-Acceleration Differ in General Relativity Versus Special Relativity?
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Undergrad The universal gravitational constant (G)
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Graduate Stability of Closed Time-Like Curves: Current Status?
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Graduate Why Can't We Apply Euler-Lagrange Directly to the Electromagnetic Lagrangian?
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Graduate Lagrangian density for continuous distribution of matter
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Graduate Is Weyl Curvature Present in Interior Spacetimes?
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Graduate Does Time Dilation Occur for Both Twins in the Twin Paradox?
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Graduate Does the speed of light change with the age of the universe?
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Graduate Generel Relativity Force or Affect in Space Time
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Graduate Why a constant determinant of the metric?
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Graduate Quick & Short Question on General Relativity
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Graduate Can Empty Space Curve? FRW Cosmology Equations Explored
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Graduate Conservations law or equations of motion, and other constrains
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Graduate Symmetrical motion and resolving differences in FoR
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Graduate Differences in Presentation of Ordinary Partial Derivatives of Tensors
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Graduate Maxwell's equations from divergence of stress-energy tensor?
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Graduate What is the Lorentz invariance of flux in the stress-energy tensor?
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Graduate Is length contraction real or just a matter of perspective?
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Graduate Why does v = 0 in the Lorentz Transformation equation?
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Graduate Metric in SR: \eta^{\alpha \beta}=\eta_{\alpha \beta}?
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Undergrad Can relativistic mechanics explain the concept of force?
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Graduate Why Curved Space Affects Satellite Orbit: The Role of Newtonian Force
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Graduate What is intuitevely the field part of GR equations?
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Graduate Direction of field line transforms like direction of a stick
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Graduate Equivalence Principle: Paper on Internal Observer Effects
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Graduate How to determine extension of a pseudo-Riemannian manifold
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High School Why is E=mc² Essential in Understanding Energy and Mass?
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Graduate The Anthropomorphized Time Traveling Paradox.
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Graduate How Does a Spinning Disc Appear at Near-Light Speeds?
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Graduate Can an Odometer Measure Relativistic Distance?
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Graduate What is intuitively the source of the gravitational field?
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Graduate Camera on Spacecraft Moving Near Speed of Light
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Graduate E=mc^2 in a gravitational field
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Graduate Applications of the acceleration four-vector
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Graduate Is Gravitomagnetism Covariant and Are There Any Alternative Approaches?
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Graduate Is energy of gravitational waves negative?
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Undergrad Problems with Proper Length and Proper Time in SR
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Graduate Invariant Spacetime Interval for Classical Spacetime
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Graduate Hall's solution for Mercury's precession
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Graduate Stress energy tensor for fields
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Graduate Potential energy and mass/energy equivalence
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Graduate Understanding the Consistency of the Speed of Light for All Observers
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Graduate How does the definition of a second affect timekeeping on Earth and Mars?
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Undergrad Gravitational Time Dilation: What is R in the Equation?
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Graduate Infinite Time Dilation at the Surface of a Black Hole?
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Graduate Generic Local Electromagnetic field - MTW Ex 4.1
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Graduate Gravity and the curvature of space-time
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Graduate The Belinfante_rosenfeld tensor
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Graduate Assuming only rest mass as source of gravity and real observations
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Graduate How Do You Transform Electromagnetic Dipole Moments When Boosting Orthogonally?
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Graduate Relativistic effects of a current carrying wire
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Graduate Is temperature an invariant in Special Relativity?
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Graduate Add Velocities: Equation for Spaceships Going 99%c
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Graduate Is pressure an invariant in Special Relativity?
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Graduate The faster you go the sooner you get there - maybe
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Help with AIP Journal Article: JMP 8.2
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Graduate Light Clock Confusion in Special Relativity
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Graduate Electromagnetic rod shortening
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Graduate Understanding Gravity: Mass, Size & Curvature
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Graduate Kinematics of Relativity: Deriving Dilation Time
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Graduate Rod shortening of General Relativity
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Graduate Solve GR Equations with Regular Method
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Graduate Radar distance Rindler observer
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Graduate Who will see the light first O or O’?
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Graduate Spinning Moving Objects: Angular and Linear Momentum
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Graduate Is there an aether to determine if an object rotates?
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Graduate Breaking the speed of light limit.
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Graduate Understanding the Equivalence Principle and Einstein's Curved Spacetime
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Graduate Why is the invariance of light a problem?
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