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 Length Contraction: Observing Light Hits on a Train
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Graduate Hafele and Keating, local gravity field as preferred frame?
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Undergrad A Bus travelling at a very high speed.
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Graduate Comprehensive list of cosmological models and their properties?
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High School Gravitational Waves: Have They Been Directly Detected?
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Graduate Accelerating spaceship paradox
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Graduate What is the path of earth in 4-d space?
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Graduate Is Time Truly Relative in Physics?
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Graduate Why is the sign in Einstein's equation's RHS often presented differently?
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Graduate How Do Time Dilation and Ringdown Waves Affect Black Hole Merger Observations?
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Undergrad Classic and Relativity Kinetic Energy
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Graduate How far does space-time bend out in space?
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Graduate Question regarding photons and mass
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Graduate Does a Black Hole Ever Collapse?
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Graduate Old experiments with superluminal speed
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Graduate Does simulataneity contradicts the constancy of speed of light
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Graduate Planck constant is Lorentz invariant?
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Undergrad Gravitational waves predicted by Einstein
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Graduate Rotating black holes in Penrose diagrams
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Graduate Confused about issues related to Time
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Graduate Doubt about Relativity: Is it Possible?
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Graduate Gravity Probe B / precession question
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Graduate Is the Speed of Light Really the Limit of the Universe?
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Undergrad How Does Time Dilation Explain the Twin Paradox?
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Graduate General Relativity vs Geometrodynamics
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Graduate What is the true magnitude and direction of Thomas precession?
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Graduate How Can Two Black Holes Merge Within the Age of the Universe?
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Graduate Total gravity of all mass and energy in Universe.
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Graduate Question about approaching light speed of a rotating object
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Undergrad How Do High Velocity Objects Influence Time Dilation?
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Graduate The three vectors in the Null Geodesic equation
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Graduate Why don't gravitational waves get distorted?
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Graduate Is the current black hole horizon observable?
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Graduate Simultaneity and Spacelike Interval
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Graduate What Geometrical Symmetry Do FRW Metrics Exhibit?
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Graduate Mini Black Hole Loose on Earth, eek
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Undergrad Time Dilation and the Flawed World Record Attempt: A Physics Explanation
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Graduate Gravity: Is it a force or a warping of space?
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Undergrad Really confused - basic special relativity
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Graduate Definition of local inertial frame
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Graduate Wormholes - A way to violate energy conservation?
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Graduate The use of electromagnetic resonance to distort space time
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Graduate Is Static Gravity Effectively Modeled as a Two-Form in Static Systems?
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Undergrad Some exercises on relativistic doppler shift?
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Undergrad Question about simple linear accelerator
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Undergrad N-body problem simulation and relativity
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Graduate Does GR remain in a universe without matter?
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Undergrad Does Light Still Travel at c Above .9c?
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Graduate Is time travel to the past or travel to a multiverse possible?
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Graduate Fundamental question on GR: Basis vector meaning
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Graduate Effect of Gravity get bent like light around another gravitational source
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Graduate Speed, Time and Events: How to Keep Up?
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Graduate Black holes in tetrad formalism
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Graduate Time Travel: What are the Theories & Factors?
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Graduate Temperature within the epicenter of a Black hole.
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Graduate Newbie question: Long trips and observed time
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Graduate Time Traveling Light: Is Time Relative?
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Graduate Geometry and long space travel
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High School The Impossible Quest: Kicking Machines in Space to Reach Light Speed
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Graduate Positive Definition of Space & Time for Layman
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Graduate How does the Einstein tensor contribute to the equations of motion in 4d?
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Graduate Einstein simultaneity train thought
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Undergrad Time dilation, mirror question
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Graduate Causes that led to discovery of GR
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Graduate Vaidya/Lemaitre-Tolman metrics
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Graduate Cuurent statuses of theories of gravity
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Graduate Determining Speed of Muons: Exercise Problem
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Graduate How Can Energy Density Be Calculated from a Metric in General Relativity?
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Graduate Gravitational index of refraction
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Graduate Comparing Hartle, Schutz, and Ohanian for GR Beginner
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Graduate Still learning about tensors
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Graduate Mass to energy conversion at fraction of speed of light
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Undergrad Why can't we time travel in backward?
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Graduate Time-like Intervals and Causality
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Graduate What is the Belt Paradox in Interferometrics Cart Phenomenon?
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Graduate Camera near the speed of light
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Graduate Can two metrics be superposed?
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Graduate General Relativity at the microscopic level
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Graduate When the Schwarzschild radius is inside the star
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Graduate Twin and ladder paradoxes help really bugging me
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Graduate Pioneer Anomaly Solved - Reflective Thermal Model
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Graduate Deriving EFE from the Bianchi Identities
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Graduate How do I calculate time dilation due to acceleration in SR please?
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Undergrad Gravity and other fundamental forces
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Graduate Covariant and Contravariant Kronecker Delta operating on Tensor
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Graduate Does gravity have effects through time?
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Graduate Question about static spacetime
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PF Logo Contest: Theory of Relativity
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Graduate Deriving the Schwarzschild Metric
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Graduate Difficulty in learning tensors
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Graduate I forgot what this is called and what is is written out.
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Graduate Concerning the importance of preffered time coordinates
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Graduate GR Class: Is it Enough to "Know" General Relativity?
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Undergrad Relative Velocity: How Newton & Einstein Used Light Speed
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Undergrad Two Balls in Space: An Observer's Perspective
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Graduate Do Gravity Waves Influence Quantum Particles and Dark Matter?
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Graduate Relativistic Momentum Derivation Help
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Graduate Lorentz Factor: Significance & Consequences
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Graduate Cygnus X-1 is nearly extremal.
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Graduate Need help resolving this paradox with time dilation
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