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 Mass is not the cause of gravity?
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Graduate Understanding the Twin Paradox: A Quick Question Answered
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Graduate How Does Relativistic Velocity Affect the Heat Capacity of an Ideal Gas?
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Graduate Relativity and particle collision.
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Graduate If all space-time already 'exists' then
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Graduate Contravariant and Covariant Vectors
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Graduate Cosmological redshift as kinematical Doppler effect
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Undergrad Mass-Energy Conservation: E/m=c^2
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Graduate Curvature of Space: What is it?
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Undergrad Why no electric field from a current in a wire? Length contraction.
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Graduate Unraveling the Michelson-Moorley Experiment
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Graduate Twin paradox without accelerative frame.
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Graduate Does Relativistic Motion Affect Time Perception on Moving Trains and Platforms?
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Graduate Tensor Densities: Coordinate Independent Definition
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Graduate What Would Happen w/ Infinite Light Box?
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Graduate Why don't black holes look like neutron stars to outside observer?
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Graduate Are Killing Vectors the Key to Solving Complex Equations?
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Graduate Do the distance between two objects contract in length contraction
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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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