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.
Undergrad Does the energy in cc also gravitate?
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Graduate The information about the curvature on the rest
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High School In what direction do gravitational waves get emitted?
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Undergrad Deriving Schwartzschild Finding Mistake in Ricci Tensor
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Undergrad Can a Tensor be Represented by a 3-Dimensional Matrix?
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Undergrad Where do the missing minutes in a live feed from a spaceship to Mars go?
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High School Does Acceleration Affect Planck Lengths in General Relativity?
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High School Gravity and Inertia: Similar but not Equivalent
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Graduate Did Einstein Disbelieve in General Relativity Geometry?
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Graduate Capture by Gravitational Radiation in 2-Body System?
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Undergrad Index algebra questions / order of indices
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High School Age of Universe: How Gravity Affects Time
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Graduate Distance of two shells in Gullstrand-Painleve coordinates
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Graduate Hubble parameter vs Scale factor's derivative
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High School Can Time Travel Take Us Back to the Big Bang?
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High School Unanswered Questions About a Lone Object's Stationary State
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High School Why Can the Gamma Factor Exceed 2 in Relativity?
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Undergrad Does the Michelson-Morley Experiment Solely Confirm Constant Light Speed?
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High School How does the universe expand with the law of thermodynamic
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High School Is Anti-Gravity a Reality or Just a Concept?
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Undergrad Questions about binding energy
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High School Can Newton's G and the "Einstein Scalar" Be Related?
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High School How Does the Michelson-Morley Experiment Detect Differences in Light Speed?
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Graduate Relativistic generalization of Newton’s equation
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Undergrad Does Special Relativity Apply to a Moving Clock?
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Undergrad How does parallel transportation relates to Rieman Manifold?
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Undergrad Dimensionless Time: Rindler & Minkowski Spacetime
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Undergrad Faster Than Light Travel: Wormhole Questions
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Undergrad Time travel thought experiment
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High School Travel Faster than Light? Opposite Direction Objects
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High School Was H.G. Wells' Concept of Time as a Fourth Dimension Accurate?
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Graduate Analogy of counterterms of gauge in GR
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Undergrad Is Photon Mass Zero or Relativistic in Nature?
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Undergrad How would the sky look if ether drag hypothesis was true?
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Undergrad Traveling the Universe at the Speed of Light: Is it Possible?
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Graduate How Do Conservation Laws Apply to a 4 Current in General Relativity?
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High School Relative Time Effect on Orbital Comm: Satellite Freq & Audio/Video
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Graduate Is There a Mathematical Definition of Time?
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Undergrad Why isn't spacetime considered as true 4D?
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Undergrad Are many exercises in Schutz just too hard?
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Undergrad Free Fall vs Acceleration: Einstein's Theory Explained
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Undergrad If you traveled towards a planet at 0.9C
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High School Why gravitational force is attractive? (and why dark matter is repulsive?)
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High School Mutual time dilation seems to be self-contradictory?
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High School Velocity dependent equations and frames of reference
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Graduate Singularity After Black Hole Evaporates: What Happens?
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High School Can Spacetime Truly Have an Outside?
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Graduate Time Independent Form of Klein Gordon Eqn.: How to Reach (gδ3(x))
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High School Need an explanation for the chances in this graph
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High School Manipulating Gravity: Is It Possible?
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Graduate When a mass enters or leaves a wormhole mouth is momentum transferred
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High School What Einstein said on faster than light travel
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Graduate Rest, Mass, and Kinetic Energy
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Undergrad Can Hyperbolic Space be affecting our view of the universe?
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Undergrad Arrow of time and travel at the speed of light
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Undergrad Closing distances at rates greater than c
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Undergrad Is time rate getting faster with cosmic expansion?
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Undergrad Time dilation (something seemingly paradoxical)
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Graduate How Does Mach's Principle Connect Distant Stars to Local Motion?
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Undergrad Force on a Spherically-Uniform Radiator Moving Through Space
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Undergrad How Is Proper Acceleration Expressed in General Relativity?
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Undergrad Gravity Waves: Measure Spacetime Stretch with a Ruler
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Undergrad Which Is More Fundamental: Time or Distance?
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Graduate Gravitational Redshift in Newtonian Equivalence Principle?
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Graduate Gravitational Radiation Power of Object in Forced Circular Motion
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Graduate Tensor Calculation & Lorentz Transformation: Understanding Relations
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Undergrad Vacuum solutions in general relativity
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Undergrad Will the velocity of light be the same in all reference frames?
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Undergrad Detecting Earth in an Elevator: Thought Experiment
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High School Can We Warp Space Faster Than C? | IXS Enterprise | NASA
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High School Is the Higgs Field Manipulable?
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High School Create Black Hole Through Heat or Fusion?
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High School Do Maps of the Universe Change with Speed and Perspective?
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Undergrad Special Relativity Approximation of Gravitation
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High School How can time dilation be the same for both observers?
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Undergrad Relation between Poincare matrix and electromagnetic field t
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Graduate Geometry and integral laws of physics
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Undergrad Ricci Tensor in Vacuum Inside Earth - Ideas Appreciated
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Undergrad Can c be set equal to 1 in certain systems of units?
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Undergrad Measuring Coordinates in Strong Gravity: Schwarzschild Metric
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High School Gravitational waves 50X total stars and not be felt?
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Graduate Length contraction and time dilation from Lorentz S
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Graduate Time dilation for the clock in the orbit
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Graduate Gravitational law of induction
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High School Why the Earth moves around the Sun forever and ever and ever?
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High School How Does Einstein's Theory Affect the Age of Light?
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Undergrad Time Dilation Between Astronaut A and Person B
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Graduate Geodesic defined for a non affine parameter
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Graduate How do we measure that two objects can have different time?
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High School General Relativity and Newtonian Mechanics
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High School Why are the gravitational waves we have detected so faint?
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Graduate Einstein and Lenard in Bad Nauheim
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High School Time Dilation: Effects on Spinning & Vibrating
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Undergrad How Does the Twin Paradox Illustrate Time Dilation in Special Relativity?
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Undergrad LIGO BH Merger & Black Hole Information Paradox
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Undergrad Light Acceleration: Does Light Really Accelerate?
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Undergrad Confusion about derivation for isotropic fluids
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Undergrad What Are the Modern Understandings of Time in Space-Time Theories?
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High School Gravitational Time Acceleration: Is It Possible?
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Undergrad Understanding Light Behavior in a Moving Train: Explained
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