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 What is Waving in Light Waves?
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Graduate Question on The Dichotomy Paradox
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Graduate I have a crude understanding of dark energy and the relativist universe.
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Undergrad Energy of photon never becomes zero
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Undergrad Can the change in energy change the mass?
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Graduate Time Dilation: Two Observers, Different Times
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Graduate My understanding of Space, Time and spacetime
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Graduate Newton's 3rd Law & Acceleration Paradox
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Graduate Conservation of momentum question
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Graduate How can a metric connection have torsion?
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Graduate If energy/matter deforms spacetime in three dimensions
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Undergrad Does Earth's Rotation and Revolution Affect Time and Speed?
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Graduate Q: A&B moving in opposite directions @ 0.6 c comparison with sound.
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Graduate Derivation of expansion scalar for FRW spacetime - weird observation
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Graduate Distance light travels in a relatively moving frame?
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Graduate What is it that sets the speed limit of light?
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Graduate Confusion over Einstein summation convention and metric tensors.
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Graduate Center of mass of a system of two photons
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Graduate What do I do with these christoffel symbols?
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Undergrad Combining SR and the Broglie Wavelength equations: Are they cumulative?
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Graduate Can motion be detected without external reference in a moving container?
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Undergrad Why is light speed constant in all reference frames?
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Graduate How does curved space create gravity?
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Graduate How did Albert Einstein figure this out?
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Undergrad Help understanding a SR equation
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Graduate Issues entering a spacetime in GRTensor II
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Graduate Does Time Flow for a Photon in the Context of Time-Space?
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Undergrad Beginner question about special relativity
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Graduate A mind experiment about speed and time
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Graduate Mass is Energy Moving Faster then Light?
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Graduate In the back of the popular Relativity book
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Graduate Time dilation thought experiment clarification
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Graduate How Does Newton's F=ma Relate to the Geodesic Equation in General Relativity?
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Graduate Radius of Ring Singularity in Kerr Black Hole
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Graduate Global observations from Rindler frame
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Graduate Worldline congruence and general covariance
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Graduate Oppenheimer Snyder Collapse - finite time?
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Graduate Can you measure the proper length of a rope when dangling it into a black hole?
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Undergrad Black hole matter accumulation
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Graduate Divergence of Energy-momentum Tensor
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Graduate How Does Time Dilation Affect Subjective Travel Times in Space?
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Graduate Understanding Spinning Black Holes: A Confused Perspective
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Graduate Vacuum and non-vacuum regions, dust and fluids
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Graduate Combining General Relativity and Geodesy: A Master's Project Topic Suggestion
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Undergrad Earth's orbit and relative speed/time
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Graduate A thought experiment with theory of relativity.
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Graduate Momentum at the speed of light
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Undergrad Need quick answer on spatial dimensions
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Graduate How do I use Einstein's field equations to solve for particle locations?
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Graduate Red/blue shift in classic train/platfom thought experiment?
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Graduate Is Magnetism Affecting Our Clocks in Space?
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Undergrad The relationship between light, energy and relativity
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Graduate How Does Mass and Energy Affect Space-Time in Relativity?
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Graduate Special Relativity and the existence paradox
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Graduate How does gravitational acceleration change near an event horizon?
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Time: A Scientific Exploration
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Graduate Absolute Space and Moving Co-ordinates.
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High School Comparative speed of moving vs unmoving
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Graduate Spherical Mass Shell - What Actually Happens?
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Graduate Simultaneity is directional while time dilation is not?
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Graduate Spacetime expanding within galaxies?
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High School Whether the speed of alternative/direct current is faster than light?
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Graduate What is the issue with photon rest mass?
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Graduate Why does time depend on light?
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Graduate The Meaning of Natural Units: $c=1$
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Undergrad Someone moving near c to an observer?
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Graduate Schwarzschild Metric - Rindler coordinates
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Graduate Time dilation in a non-inertial reference frame
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Graduate Is there a smallest unit of gravity?
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Graduate Special Relativity breaks down in matter?
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Graduate Basic derivation of Lorentz Transformation
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Graduate Redshift of Sound in a Gravitational Field
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Graduate Transformation of the Line-Element
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Graduate Diffeomorphisms in Flat-Space: Are All Metric Preserving?
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Graduate Confused About Tensor Density Behaviour
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Graduate Conservation of Four-Momentum in Neutrino-Electron Collision
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Graduate Did I understand this correctly - time slowes down due to acceleration?
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Graduate Special Relativity basic concepts confusion
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Undergrad Two lightnings that happen at the same time, a train and a passanger
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Graduate Relativity and elementary physics
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Graduate Conservation of Momentum puzzle
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Graduate Effects of Constant Curvature on Radiation: Red-Shift or Unaffected?
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Graduate General Relativity Gravitation Calculations
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Graduate Understanding Aging and Time Dilation: The Twin Paradox Explained
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Graduate Why does length contraction happen only in the direction of motion?
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Graduate Does an accelerated particle emit gravitational waves?
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Graduate Does it mean that as you increase the energy of a particle
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Graduate What are the effects of Gravitomagnetism?
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Graduate Is General Relativity a Gauge Theory?
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Undergrad Simple realtivity: Length contraction
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Graduate Hi This is the definition of simultaneity I was taught: Two
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Graduate Relative motion - disagreement at very low speeds
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Graduate Is Gravity Fictitious? A Look at Victor Stenger's The Fallacy of Fine Tuning
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Undergrad 2 objects travailing in opposite directions?
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Graduate Math Courses Relevant to General Relativity
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Graduate Massive Object's Relativistic Velocity: What Happens to Earth?
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Graduate Why do mass, time and length change at a rate determined by Gamma?
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Graduate Is Lorentz factor reality true according to the laws of physics?
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Graduate Is Gravity Affected by its Own Potential Energy?
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Graduate Is There a Limit to the Speed of Time?
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