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 Lorentz vs space time interval
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Graduate Can GR accurately predict the speed of gravity waves as c?
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Graduate Basic question about the nature of light and time
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Graduate Question about alpha, the fine structure constant
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Graduate BRS: Some Recent GTR-Related arXiv Eprints
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High School Is Time Travel Possible and How Can We Achieve It?
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Graduate Special Relativity: Going from A to B on a helix
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Undergrad Speed of Light: Time and Motion Explained
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Graduate Conservation of energy predict invariance of elastic collisions?
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Graduate Spin Counter: Can a train's length really dilate?
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Graduate Information transfer that is faster than c?
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Graduate Can Relativity and Gravity Coexist?
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Graduate Does Spin Affect Gravity at the Particle Level?
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Graduate Counting independent components
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Graduate Speed of light in Non-Inertial reference frame?
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Graduate I understand time dilation with light clocks, but
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Undergrad Beginner's questions on time dilation
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Graduate Tipler Cylinders: Solving for Light Cone Tilt Angle
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Graduate Calculating Apparent Speeds of Objects at Light Speed
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Graduate What Causes Time Dilation in Accelerated Systems Compared to Inertial Systems?
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Graduate Special relativity on a circle
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Graduate What are the main paradoxes in Special Relativity?
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Graduate Center of Mass in Special Relativity: Observer Dependence?
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Graduate Two travelers both in Inertial Frames
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Undergrad A question that has been plaguing me
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Graduate Why is the speed of light fixed while everything else is relative?
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Graduate Real Inertial Motion: A Discussion of Frame Independence
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Graduate Unraveling the Mysteries of Muon Experiments
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High School Experimental data in relativity
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Graduate Is Time-Reversal Symmetry Valid in Curved Spacetime?
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Graduate Magnetic Monopoles and Gravity
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Graduate Speed of light & streaming video
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Graduate Momentum of photon close the sun or black hole
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Undergrad Quick question - has length contraction actually been experimentally confirmed?
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Graduate Conservation laws in GR: a messy picture?
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Graduate Relativity query - communication with an object at light speed
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Graduate Confused about time slowing down
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Undergrad Paradox: Who Will Be the Oldest After Travelling Near Light Speed?
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Graduate Spacetime / Time Dilation Question
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Graduate How should we convey curved space-time?
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Graduate Planck relation, relativistic doppler effect, and relativistic mass
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Graduate Alternative form of Minkowski metric?
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Graduate Reference Frames in Simultaneity
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Graduate Travelling greater than speed of light
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Undergrad Questions about lights constant and photons
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Graduate Is Time Constant? Why We Assume It Is
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Graduate Potentials, connections and curvature
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Graduate Understanding GR Vacuum Solutions: Explaining the Role of Matter in Curvature
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Graduate Gravity (over extremely long distances)
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Graduate Question about length contraction (geometric way)
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Graduate Energy loss of a photon moving against gravity
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Graduate Frames vs Lines of Simultaneity
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Graduate Are accelerating lines of simultaneity correct?
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Graduate Rookie Energy Query: Mass Outflow in Supernovas
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Graduate Resolve to the Twins Paradox – Frame of Origin
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Graduate Are the doppler effects of sound wave and light wave of different roots?
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Graduate If distance and time can change then how can c be constant?
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Graduate Relative Simultaneity and Electrodynamics: Lorentz Maths
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Graduate Second postulate of Special theory of relativity-help
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Graduate Why does the second term disappear in the tangent vector equation?
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Graduate How can radar data be used to calculate acceleration?
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Graduate Is the Radius of the Universe Measured by Redshift or Distance?
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Graduate Understanding the Constant Speed of Light: Mathematical and Logical Explanations
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High School Is Your Thumb a Miniature Gravitational Lens?
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Graduate Reference book for gravitational force
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Graduate Rindler coordinates introduction
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Graduate Calculating Proper Acceleration at Bottom of a Half Light-Year Rocket
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Graduate How are the twins distinguished?
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Graduate The main obstacle in learning relativity related theories
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Graduate Orthogonal diretion on the Minkowski diagram
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Graduate John Moffat's STVGravity: Recognition by Physics Community?
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Graduate Can Every Spherically Symmetric Spacetime Be Represented by a Penrose Diagram?
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Graduate Revisiting the Flaws of the Light Clock in Special and General Relativity
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Graduate Is There Evidence for the Existence of an Anti Black Hole?
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Graduate Atomic Level Time Dilation Resources
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Graduate Particle-like Solutions of Einstein Equation: Definition
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Graduate Joe's confusion about contraction and direct product explained.
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Graduate Spherically symmetric metric form
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Undergrad The opposite of the limit of light
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Undergrad Do Laser Beams from Spacecrafts Travel at Different Speeds?
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Graduate How Does Curved Space Around Black Holes Compare to L2 and LP Spaces?
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Graduate Representation of covariant and contravariant vectors on spacetime diagrams
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High School Maths of E=MC squared, please can someone explain the maths?
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High School Question About a light beam .
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Graduate Energy and Mass: What Happens to Energy in Relativity Theory?
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Graduate Conformal group -> Poincaré group
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Graduate Time dilation due to relative velocity
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Graduate Length contraction and rod falling thorough a grate ?
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Graduate Experiment Showing Relativistic Effects in PD Acceleration
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Graduate Things that can't happen on a manifold
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Graduate Is it possible that black holes do not exist?
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Graduate Why Is It Impossible To Reach The Speed Of Light?
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Graduate How does the concept of light speed affect our understanding of time?
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Graduate Can Light Emission Be Explained Through Newtonian Physics?
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Undergrad Artificial gravity meeting zero gravity
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Graduate Motion in Spacetime (using internal forces), swimming/gliding.
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Graduate Regarding quasars not showing signs of time dilation.
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Undergrad Same old song and dance - special relativity
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Graduate Schwartsschild from Newton + Relativity
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Graduate Space-Time curvature? the units?
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