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 Can a star be a black hole in one frame of reference but not in another?
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Undergrad How Can Time Be Relative While the Speed of Light Remains Absolute?
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Graduate Estimating Photon # in 2 Frames: Lorentz Transformation
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Graduate Help with the basics of Maxwell and Lorentz equations
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High School The relation with time and light
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Undergrad Can any celestal body or anything rotate at speed of 90 degree
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Graduate What's up with spinning superconductors?
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Graduate Question on special relativity
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Graduate Is the equivalence principle good for anything?
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Graduate Experimental tests of General relativity vs Cartan extension
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Graduate Does Time Exist at the Speed of Light?
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Graduate Relativity of Simultaneity - Question about the Classic Train Example
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Graduate Can you increase the speed of light?
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Graduate Torque relative to an inertial frame
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Graduate Understanding the Difference Between Original and Instantaneous Rest Frame
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Graduate Special Relativity / Cosmology
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Graduate Some questions regarding gravity
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Graduate Transformation of k_y in the wave 4-vector
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Graduate Strange geodesic in Schwartzschild metric
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Graduate What Are the Properties of Light and Matter Waves?
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Graduate Relativistic Doppler effect and relativity principle
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Graduate Simultaneity (Special Relativity)
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Graduate Understanding Special Relativity vs Quantum Mechanics
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Undergrad Spinning Universe: Is Centripetal Acceleration the Cause of Expansion?
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Graduate Unsophisticated, theoritical implications of time dilation between 2 worlds
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Undergrad Weight, Acceleration, Gravitational Equivalence
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Graduate Light speed, time dilation question
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Graduate Geo600 search for gravity waves
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Graduate Twin paradox without length contraction
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Graduate STRACTWhy Do We Always Rescale the Null Direction in Conformal Compactification?
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Undergrad What is the Einstein Velocity Addition Formula and How Does It Work?
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Graduate Gravity ~ Acceleration ~ Centrifuge & GR
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Graduate What Causes the Sagnac Effect and How to Calculate Reduction in Light Intensity?
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Graduate Inconsistent forms of the metric in a uniform field
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Graduate Spinning disk approaching c, what will happen?
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Graduate Is the Higgs Boson Necessary if Lorentz-Fitzgerald Accounts for Mass Increase?
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Undergrad Understanding Mass from Different Observers
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Graduate Definition of a rotating frame in GR?
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Graduate Proving the One Way Twin Paradox: O' Reads T'>0, K Clock Reads More than T
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Graduate Is the Center of a Finite & Unbounded Universe the Preferred Frame?
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Graduate Does the Michelson-Morley Experiment Assume a Constant Speed of Light?
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Undergrad Why Speed of Light Can't Be Exceeded?
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Graduate Putting numbers in Einstein's thought problem
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Graduate Why do clocks tick slower and faster in different depths of gravity?
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Graduate Null curves vs. straight curves on Minkowski space
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Graduate Is Time Indistinguishable from Motion in a Motionless Universe?
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Graduate Energy conservation in a closed universe
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Graduate Is there a thermal equilibrium in General Relativity?
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Graduate Is curvature guaranteed if only one connection coefficient is 'large'
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High School First reactions to Einstein's theories? (support or refute)
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Graduate Can Negative Curvature Create Closed Spaces Like a Torus?
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Graduate Vielbein Postulate: Unpacking Carroll's Derivation
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Graduate Schutz - A First Course in GR - Simple Summation Question
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Undergrad What Causes the Attraction and Repulsion of Current-Carrying Wires?
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Graduate Determining 4-vector character of a 4-tuple
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Graduate Help with geometric interpretation of 1-form
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Graduate Shady Crypt Observatory E=mc^2 derivation
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Graduate Is there a possibility of particles faster than light?
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Graduate Time Dilation -light vs. spaceship
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Graduate SR derived solely from one postulate
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Graduate Redshift Factor in a Symptotic Stationary Flat Space
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Graduate Isotropic inhomogeneous metric
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Graduate A question about general relativity
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Graduate Interpreting g(f u\otimes u + v\otimes v) with Scalar Field f
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Graduate Twin paradox in a closed universe
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Graduate Dot product of 4-force and 4-velocity
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Undergrad Einsteins light beam Lets go for a ride again
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Graduate Time dilation = something is wrong
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Undergrad Length Contraction Documentary
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Graduate Tests for Radiative Character of Spacetimes
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Graduate Solving the Compton Wavelength: Help from Andrew
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Graduate Finding the Metric of a Surface
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Graduate Is Gravity Enlarged at Small Distances?
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Undergrad Dispute over basic relativity question
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Graduate Exploring General Theory of Relativity
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Graduate Counter intuitivity and relativity
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Graduate Relativistic Force Transformation: A Comprehensive Guide to Special Relativity
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Graduate OUT Hyperbolic Motions | 65 Characters
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Graduate Einstein metric and Space-time metric
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Undergrad What Are Higher Dimensions and How Do They Affect Our Everyday Lives?
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Graduate Geometry of minkowski spacetime
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Time Travel book recommendations
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Undergrad Mass-Light Conversion: How Much is Lost?
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Graduate How can light travel through space and time if time stops at the speed of light?
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Undergrad Will time stop if we were able to go as fast as the speed of light?
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Graduate Can Chromatic Aberration arise from Gravitational Lensing?
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Undergrad What Does Einstein's Space-Time Theory Reveal About Observing the Universe?
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Undergrad Travelling faster than the speed of light?
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Graduate Monkey Hunter demonstration in GR
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Graduate SR time dilation real or perceived
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Graduate The 4-D Laplace equation and wave equation
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Graduate Is There More to the Energy-Momentum Equation Than Meets the Eye?
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Graduate How Do Invariant Hyperbolae Relate to Spacetime Distances?
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Graduate GR derived using spinning ride example?
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Graduate Comparing Cranks and Einstein's Thought Experiment
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Graduate Does measuring the age of the universe result in objective observation?
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Graduate Tidal forces inside BH in horizontal direction
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Graduate Atomic Clock Reveals Slowing of Time Predicted by Einstein
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Graduate Lorentz Contraction Circular Motion
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Graduate Is Gravity Really a Force? Examining Einstein's Theory of General Relativity
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