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 Why is synchronizing clocks important?
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Graduate Crackpot argument on Physicsforums gets published?
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Graduate How Does Acceleration Relate to General Relativity and Spacetime Curvature?
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Graduate Why Does Hamilton's Function Equal Zero in Relativistic Lagrangian?
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Graduate Is the Speed of Light Truly Constant in a Vacuum?
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Graduate SR Limit Problem: mcc/sqrt(1-uu/cc)
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Graduate Gravity: real force or artefact of acceleration?
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Undergrad Looking for complete explanation of logic behind relativity
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Undergrad Einstein's papers translated to english?
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Graduate Can Lorentz Contraction Exceed Light Speed?
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Graduate Relativity, the flow of time and speed
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Undergrad Does Hubble's Law violate special relativity?
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Graduate Can Two Black Holes Merge and Reverse into Regular Matter?
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Undergrad A rocket can't travel faster than the speed of light
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Graduate Question about events inside black holes
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Graduate Boosting EM Field Tensor: Lorentz Invariance & Potential Effects
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Graduate A question with the readings of synchronized clocks
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Graduate Special Relativity, Existence, and Big Bang
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Graduate De Broglie & Light: My Doubt - Einstein's Calc
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Graduate Speed/Aging Theory: Is a 4D Universe Moving at c?
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Graduate Can a Particle Reach Light Speed at r=3M in a Schwarzschild Black Hole Orbit?
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Graduate What does curvature of spacetime really mean?
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Graduate Wormholes, parallel universes, negative mass
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Graduate Lorentz transformation active or passive？
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Graduate Do Standing Waves Exist in General Relativity?
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Graduate Paper discussing the mathematics of relativity
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Graduate Invariance of combinations of physical quantities
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Graduate Maxwell's equations in higher dimensions.
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Undergrad Speed's influence on space time
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Graduate An honest question about time dilation in SR
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Graduate Does a gravitational field have mass?
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Graduate Limit to strength of electron magnetic field
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Graduate Galileo's experiment and Equivalence Principle
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Graduate What Happens to Baseball When Light Speed is Just 88 MPH?
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Graduate Thermodynamics and Relativity: observing gases, rel. effects
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Graduate Twin Paradox: Simplifying Physics for Age Difference Explanation
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Graduate Time dilation, length contraction
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Graduate DEC with E/M and scalar fields
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Graduate Chasing a Beam of Light: Understanding Special Relativity's Thought Experiment
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Graduate Relativistic Paradox: Particle A vs B Decay Rate
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Graduate Why Do Sound Signals Appear Simultaneous in Einstein's Train Thought Experiment?
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Undergrad Could someone me with a question about gravity?
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Graduate Speed of Light and the Causality Problem
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Graduate What convervation law is required by the Lorentz Transformations
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Graduate Flat-space picture of gravity vs. General Relativity
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Undergrad Fizeau, 1851, drag coefficinet
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Graduate Relativity Express: Einstein's Train Thought Experiment
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Graduate Research on general relativity
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Graduate What are Manifolds? Understanding the Continuum in Mathematics and Physics
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Graduate Frame dragging effects on speed of light
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Undergrad Does kinetic energy vary by frame of reference?
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Graduate Total energy/mass in stationary GR
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Graduate Why the Reasoning is Wrong: Explaining the Mistake
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Graduate Theories of Gravity: Explaining the Perihelion of Mercury's Orbit
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Graduate Understanding the Four Momentum of a Relativistic Field
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Graduate On the Notations of Length Contraction and Time Dilation
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Graduate Relativity and Electromagnetism
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Graduate Constraints on metric coefficients in General Relativity (GR)
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Graduate How Does Speed Affect Time Dilation in Relativity?
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Graduate Effect of gravitational potential on energy
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Graduate Why Do We Measure Distances in Light Years Despite Time Dilation?
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High School If such an object does exists
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Graduate Magnets (and other things) at the speed of light
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Undergrad Relativistic Effects: Particle Accelerators & Speed of Light
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Graduate What are the best free software options for visualizing relativity concepts?
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Graduate Question about going faster than speed of light
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Graduate Relativistic mechanical index of refraction
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High School Understanding Light: Frequency vs Wavelength in Different Mediums
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Undergrad Understanding the Energy of Light: Unraveling the Mystery Behind 1/2mc^2
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Graduate Speed of light - can it be exceeded?
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Graduate Calculating Relativistic Rocket Performance
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Undergrad Understanding Relativity to Explaining Time Dilation
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Undergrad Light vs Light: What Does it Look Like?
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Undergrad Information traveling faster than light?
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Graduate Differential Geometry/Topology in GR: Research Needed?
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Graduate Christoffel Coefficient Defined: Exploring Beyond the Metric Tensor
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Graduate How to Prove Lorentz Invariance of Volume Element in Momentum Space?
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Graduate Can we slow down a photon's velocity to 0?
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Graduate Inertial dependence upon local matter
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Undergrad Defining Special Relativity & General Relativity
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Graduate Understanding SR/GR: Tips and Tricks for Intuitive Comprehension
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Graduate Relative speed of tachyons greater than c?
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Graduate What would happen if a spinning space station reached the speed of light?
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Graduate Is the Spacetime Interval Truly Invariant Across Different Reference Frames?
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Graduate Twin Paradox: Why Twin On Ship Ages Slower?
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Graduate General newbie questions regarding the speed of light
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Graduate Koide and Kodama on relativistic brownian motion
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Graduate Dude, where's my anti-graviton?
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Graduate Can Kindergarten STR Math Solve Polchinski's Paradox?
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Graduate C independent of observer and emitter
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Graduate How would you observe outside events on a spacecraft?
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Graduate How can we calculate a rest mass?
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Graduate About the Non-paradoxicality of the Twin Paradox
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Graduate Thought Experiment on ToR postulate-1
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Graduate Schwarzchild solution and orbit precession
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Graduate Gravity and Photon Relationship: Understanding Red and Blue Shift
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Graduate How to get inverse Lorentz tranformation from direct Lorentz transformation
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Undergrad Relativity: Inertial vs. Coordinate Systems Explained
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Graduate High Energy Gamma Rays Go Slower Than the Speed of Light?
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Graduate Can SR Postulates 1 and 2 Be Derived from Each Other?
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