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 Equivalence Principle Explained - What is it?
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Graduate Killing vectors on a 3D Euclidean space
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High School Gravity: How do objects communicate?
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Graduate Solving Einstein Field Equations for Minkowski Space with CTC
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Undergrad Faster-than-light newbie question
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Graduate Question about Brian Greene's book
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Graduate Important and/or Interesting Spacetimes
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Graduate Question about black holes and gravity
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Graduate Relativistic inelastic collisions?
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Graduate Does time dilation occur even in our everyday movements?
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Undergrad Solving the Mystery of Graviton & Einstein's Accelerating Frame Model
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Graduate Can a light beam stay trapped in a moving cart with ideal mirrors indefinitely?
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Undergrad Hooke's Law & SR: Does k Change with Moving Springs?
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Graduate How does the String Theory Propeller behave as you approach the event horizon?
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Undergrad Gravity - a function of mass or of density?
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Graduate Is There a Discrepancy in Distance Measurements?
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Graduate If Two Spaceships close at a speed of 1.4c ?
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Graduate What is the relationship between 4-momentum and energy/momentum components?
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Graduate What is 'Curvature' of Spacetime
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Graduate Length and time comparisons in SR
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Graduate BRS: Penrose-Carter Conformal Compactifcations of Spacetimes
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Undergrad Link between Thermo and Special Rel?
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Undergrad Can Two Events Be Simultaneous in Multiple Reference Frames?
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Graduate Metric tensor of a non-homogeneous universe
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Graduate Need simple introduction to homology / cohomology theory
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Graduate The feeling of time while traveling at the speed of light
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Graduate Rotating vs. Stationary Mass Grav Effects?
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Graduate How Does Gravity Affect Time and Distance in Space Travel?
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Graduate Einstein-scalar field action -> Einstein-scalar field equations
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Graduate Covariant derivative in spherical coordinate
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Graduate Length Contraction of Particles & Photons in Relativity
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Graduate Gravitational waves due to acceleration
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Undergrad Can Gravitational Force Depend on Medium Like Electric Force Does?
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Graduate Michelson–Morley experiment using objects with mass?
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Graduate What Happens to Light Between Two Colliding Black Holes?
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Graduate A study of the motion of a relativistic continuous medium
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Graduate Clarification on light speed experiment
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  • Poll Poll
Graduate Curved or non-curved space, what is more fundamental?
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Graduate Speed of a photon relative to another photon
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Graduate Gravity time dialation and acceleration?
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Graduate Length contraction and time dilation equivelant?
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Undergrad Does energy has gravitational force?
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Graduate Source of Gravitational Energy
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Graduate Lorentz tranformations and time slices
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Graduate Time Dilation: Object & Lightbulb
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Graduate How Does Velocity Influence Energy Perception in Physics?
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Graduate What Happens to Time Dilation at a Black Hole's Event Horizon?
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Graduate What General Relativity Project Should I Undertake to Enhance My Knowledge?
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Graduate BRS: PKI Cryptosystems for SA/Ms: A Tutorial
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Undergrad E=mc2 | If something has near zero mass, can it move?
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Graduate What Is the Shortest Path on a Sphere If Not a Line of Latitude?
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Graduate Why is There No Universal Space? - Henrik's Questions
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Graduate Gravity and Mass: What's the Need for a Graviton?
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Graduate Einstein Equation with Cosmological Constant & Variable x^u
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Graduate Mermin's geometrical approach to SR
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Graduate Confirming Einstein's Theory: Measurement of Bending of Light
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Graduate Is time travel possible and does it mean we have no free will?
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Graduate Can a New Type of Black Hole Exist Without a Singularity?
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Graduate Curved Space-time and Relative Velocity
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Graduate Could an observer prove he is in a CTC?
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Graduate What Does Locally Lorentz Really Mean in Spacetime Geometry?
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What Are the Innovations in Timelike Congruences by Abreu and Visser?
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Undergrad Relativity & Twins: What Happens When Two Move Away & Return?
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Graduate General Question on Schwarzschild Metric
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Graduate What is the 4-velocity of an object?
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Graduate Most power gravitational wave sources
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Graduate Mass-Beam Behaviour: An Analysis of Efficiency for Particle-Beam Pushed Sails
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Undergrad Understanding Relativity: An Introduction for A-Level Students
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Undergrad Question about Galileo's principle of relativity
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Graduate Solutions to Killing's equation in flat spacetime
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Undergrad E=MC2 vs. m² = E² - p²: Motion vs Rest
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Graduate Derivation of Energy-Momentum Relation WITHOUT using relativistic mass?
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Undergrad Special relativity Only Valid Under Handpicked Conditions?
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Graduate The Stress part of the Stress - Energy - Momentum Tensor
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Graduate ED Griffiths "World Line" Problem: Solution to p.506, prob. 12.22
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Graduate How Does Time and Space Switch Roles at a Black Hole's Event Horizon?
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Graduate Functional derivative of connection with respect to metric
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Undergrad Can Time Travel Really Alter Our Perception of Communication?
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Undergrad Is the presence of 'c' in E=mc^2 coincidence?
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Graduate How much matter can you put in space and time?
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Graduate Am I taking crazy pills or is Einstein missing a factor of gamma?
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Undergrad General Relativity- the Sun revolves around the Earth?
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Graduate What is the true meaning of rest-energy in relativity?
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Graduate Coordinate transformation and metric tensor
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Undergrad Coordinate Systems: GR vs Newtonian
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Graduate What Makes Gravity Seem So Weak Compared to Other Forces?
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Graduate How Can Gravity Be Calculated in an Alderson Disk System?
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Undergrad Question about Black Holes and Speed
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Graduate Where does the Einstein-Hilbert action come from?
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Graduate Velocity addition expressed as gamma
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Undergrad Can Energy be Converted into Mass?
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Graduate Time Dilation Light Clock Example
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Graduate Deriving Relativistic Momentum
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Graduate What Determines the Sources of Gravity in Einstein's Theory?
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Graduate How Does Dark Energy Exhibit Negative Pressure in Cosmology?
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Graduate Gravitational Analog to Maxwell's Eq.
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Graduate How Can We Understand Geodesics in Curved Spacetime Under Gravity?
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Graduate Understanding Contortion Tensor in Teleparallel Gravity
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Graduate Has Special Relativity really been proven?
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Graduate Timelike geodesic equations for the Schwarzschild metric
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