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 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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Graduate Does heat generate additional gravity
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Graduate Speed of Light in Cesium Vapors
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Graduate GR with Riemannian ( ) metric?
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Graduate Clock rates and effective ptotential.
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Graduate Gravitational lensing paradoxon
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Graduate Eddington Finkelstein Coordinates + Black Holes
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Graduate Please set me straight about velocity based time travel
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Graduate Maxwell's equations in curved spacetime.
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Graduate Can we use the Schwarzschild metric under the horizon?
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Graduate Proving the Universality of Physical Laws: A Challenge for Kev
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Undergrad Speed of Light: Can We Reach It?
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Graduate How to Calculate the Variation of Quadratic Action for Riemann Tensors?
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Is Time Slowing Down? Scientists Weigh In
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Graduate Is this why relativity and quantum physics don't mix?
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Graduate Time Travel and the Conservation of Matter Problem
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Graduate What Does the r=0 Singularity Represent as an Event at Fixed Time in Spacetime?
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Graduate Gravitational time dilation vs velocity time dilation
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Undergrad Proving Special Relativity Wrong: Experiments & Particles
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Graduate Elementary question - Special relativity
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Graduate What Does Newton's Bucket Paradox Reveal About Motion and Inertia?
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Graduate Stone's derivation of Thomas rotation
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Graduate Integrating an accelerating Worldline
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Graduate Light has mass, and it travels at the Speed of light, so a massless object .
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Graduate Cosmic Relativity: C. S. Unnikrishnan's Reassessment
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Moving though space but not time?
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Graduate Maxwell's Equations in the Light of General Relativity
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Graduate General Relativity and a Force Mediating Graviton?
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Graduate Is this a way to move faster than c?
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Graduate A few simple questions about clocks moving slow relative to observers
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Graduate Is Time a Fundamental Element of the Universe or Just an Illusion?
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Graduate The scope of inertial time dilation?
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Traveling at the speed of light in orbit around a black hole
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Undergrad Why do we have red shift and blue shift, and not only one?
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Graduate Are forces subject to the doppler effect?
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Graduate Satisfies Killing equation, but not a Killing field?
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Graduate Schwarzschild metric not stationary inside the horizon?
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Undergrad 2 spinning or orbitting objects and their effect on time
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Graduate Question about calculating time dilation of clocks at sea level
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Graduate Is Non-reciprocal Time Dilation Possible in This Scenario?
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Graduate What is the significance of the Rubik Group in combinatorial species theory?
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Graduate A beam of light compared to bullet in gun
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Graduate Diffeomorphism invariance and Noether's theorem
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Graduate Length Contraction Euclidean Space
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Graduate How does the energy and time dilation of objects moving at high speeds work?
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Graduate Dimensional Rifts, Windows, Einstein-Rosen Bridge & other Mindbenders
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Graduate Special Relativity and the Particle-Antiparticle Problem
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Graduate Faster Spinning Earth: Gravitational & Centrifugal Affects
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Graduate Is the speed of light always constant in non-inertial frames?
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Graduate General relativity time dilation
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Undergrad Would the other end move instantaenously
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Graduate What Did Fizeau's Experiment Reveal About Motion and Ether?
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