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 does time slow down as you approach C?
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Graduate How does the block universe concept relate to the 4-D location of observers?
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Graduate 1/2 kilogram black hole: thought experiment
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Graduate Why is the Speed of Light Key to the Mass-Energy Equation?
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Undergrad How do Maxwell's equations indicate that the speed of light is constant?
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Graduate Time dilation and length contraction in hyperbolically-curved spacetime
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Graduate Relative increase in fuel mass
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Graduate Independent components of the curvature tenso
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Graduate Question about Hawking radiation in BH
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Graduate Deriving General Lorentz Boost Equation
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Graduate Gravitational acceleration in GR
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Undergrad Speed of light last value accepted 1983
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Graduate Relativistic Energy in an Inverse Square Field: The Impact of Velocity
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Graduate What is the bare Minimum Lagrangian\Hamiltonian mechanics
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Graduate SR/LET Thought Experiment Help - Three clocks problem
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Graduate Faster than light and time travel
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Graduate Quick question about lorentz transforms
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Graduate Acceleration measured in another inertial frame?
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High School Time Problem at Mt. Everest: Base vs Summit
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Graduate MTW 25.29 v.s. 25.38 (first formula)
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Undergrad If two spaceships are moving toward each other at the 0,9c
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Graduate If a neutrino has a non-zero mass
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Graduate Can Space and Matter Exist Without Time?
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Graduate Is time reversal logically consistent?
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Graduate Project ideas for modern physics class
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Graduate Minkowski diagram - the angle between axes
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Graduate OPERA neutrino arrivals analysis
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Graduate Just a quick question on the derivation of energy
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Graduate Wanting to understand the one-way speed of light problem in more detail please
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Graduate Flash of light thought experiment, need explanation
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Undergrad Time with no gravitational force
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Graduate About confusion of lenght contraction, and possiblity of length expansion
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Graduate Derivative of a function of a lorentz scalar
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Graduate Variation of the auxiliary worldsheet metric
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Graduate Combining time dilation and length contraction
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Graduate Length contraction and the expansion of the universe.
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Graduate I am sitting on my chair, am I accelerating for General Relativity?
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Graduate If CERN's claim is true, how would SR and GR change?
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Undergrad If light has no weight, how can it push objects?
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Graduate Faster than light and time travel into the past.
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Graduate Yet another one on the twin paradox/proper acceleration
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Graduate What can the rest frame of a neutrino possibly mean?
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Graduate Effect of gravity on time dilation.
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Graduate Relativistic Momentum: Mass, Velocity & Lorentz Factor
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Graduate Is Matter Ultimately Made Up of Photons?
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Graduate BH fall time = pi*m. What is external time?
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High School How Close Are We to Understanding Time and Space?
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Graduate Neutrinos traveling faster than C?
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Graduate Contraction of the Riemann Tensor with the Weak Field Metric
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Graduate Is Gravity a force or the chape of spacetime?
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Graduate Time Dilation: Is it Counterintuitive?
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Graduate Notation Convention: Primes in Coordinate Transformations
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Graduate Relativistic mass of falling body
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Undergrad Why does the rest mass of an object increase when it's in motion?
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Graduate Relativistic Mass vs. Invariant Mass.
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Graduate Quick Tensor Question: Difference between Vector and Ordered n-Tuple
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Graduate Resultant Gamma after Einstein velocity addition
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Undergrad Self-learning special relativity
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Graduate Lorentz transformations formulas
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Journal of cosmology and gravitation
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Graduate One Way Speed Of Light - Definition & Experiments
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Graduate How Does Acceleration Affect Time Dilation in Twin Space Travel Scenarios?
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Graduate Time/electromagntec spectrum and causality
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Graduate What exactly is compressed at very fast speeds?
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Graduate Using cadabra to calculate antisymmetric tensor field
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Graduate TIME DILATION. WHY do clocks that are
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Graduate What does it means to say two events are simultaneously observed?
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Graduate Can Phase Velocity Exceed the Speed of Light and Enable Time Travel?
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Graduate Solving Spaceship Chase Scene Relative Velocity Problem
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Graduate Black hole falling time for external observer
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Undergrad Relations between kinetic energy, momentum and velocity
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Graduate What is the outcome of the twin paradox in a new version?
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Graduate Schwarzschild and Newton potential
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Graduate Speed of light for different observers
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Graduate Einstein's Mirror Thought Experiment: Debunking the Luminiferous Aether Theory
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Graduate Divide in space and time component
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Graduate Is curved space allowed to show discontinuities (steps)?
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Graduate Visualizing Minkowski geometry
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Undergrad Regarding constancy of speed of light
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Graduate Spacetime curvature and the force pulling an object down the curvature
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Graduate Question on submanifolds of a semi-riemannian manifold
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Graduate Two identical black holes, but rotating in opposite directions collide
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Undergrad Is the speed of light any faster in low density space than in high
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Graduate How emission theory was disproved by de sitter binary star experiment?
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Graduate Clarification on mass-energy tensor and 4-velocity.
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Graduate Does a gravitating body have to undergo gravitational collapse?
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Graduate Slightly confused about embedding picture and imagining spacetime
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Undergrad Time Dilation: Impact on GPS Accuracy
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Graduate What does added mass mean for a spaceship travelling at the speed of light?
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Graduate Changing Gravitational Effects of Rapidly Moving Objects
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Graduate Susskind Lecture - accelerate reference frames
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High School Free Fall & Gravity: Feelings & Differences
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Graduate Covariant global constants of motion in GR?
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Graduate What Causes Earth's Motion in General Relativity?
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Graduate The shape of space-time around a star
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Graduate Gravitational redshift, energy and the EP
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Undergrad Does E=mc2 Work with Different Metric Systems?
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Graduate Progress on detection of gravitational waves?
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Graduate Field Energy and Time Dilation in Relativistic Motion
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Graduate Why can we use metric tensors to lower index of Christoffel symbol
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