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 the constant C for Hodge dual in tensor notation?
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Graduate Einstein's Concept of Individual time
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Graduate Hoax? The works of Niels Bjern
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Graduate Is the inertial mass of light relative?
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Undergrad Viewing an object with the naked high at near light speeds
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Graduate Can a Neutron Star Become a Black Hole Due to Relativistic Effects?
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Undergrad Would a moving scale read more than a scale at rest?
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Graduate Can Interferometers Measure Gravitational Waves Despite Being Made of Matter?
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Graduate Lemaitre Coordinate from the E-F coordinate
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Graduate The Spaceship and The Wrench (1/2 + 1/2 = 4/5)
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Undergrad Need help understanding inertial frames of reference
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Graduate Morley-Michaelson Experiment & Aether Rigidity
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High School How important was Einstein, really?
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Graduate Effective mass of gravitational waves
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Graduate Is it possible to get rid of the B field entirely?
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Graduate Is It Possible to Define a Clock Rate as c in Relativistic Frames?
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Graduate Found a way around relativity of simultaneity
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High School Spinning faster the the speed of light
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Graduate Explaining Incompatibility of Electrodynamics & Special Relativity
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Graduate Momentum of light in gravity field and other mediums
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Graduate What happens to matter that was inside an event horizon before the collapse?
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Undergrad Rocket Velocity: γ = 4, v = √15/4c
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Undergrad Is particle speed affected by source?
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Graduate Visit With Paul Davies on Block Time
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Undergrad Noob question about relativity
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Graduate How Weight of Flywheel Changes in a Gravity Well
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Graduate Events for frame changing clocks
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Graduate Speed of the light and time dilation
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Graduate Question about distance units in relativity
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Undergrad Want to learn about special relativity?
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Graduate Basis vectors and abstract index notation
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Graduate Can Exceeding the Speed of Light Really Mean Time Travel?
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Graduate Understanding Time Dilation in Special Relativity: Separation and Relative Time
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Graduate At rest in Einsteinian relativity
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Graduate Travelling to the future (paradox)
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Graduate Two-body problem in general relativity
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Undergrad Implications of the Mass-energy equivalence
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Graduate Is there a more beginner-friendly book to learn General Relativity?
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Graduate Relativity & Surroundings: Train within a Train Theory
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Graduate Gauge Transformation: Coulomb to Lorentz
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Graduate Generalization of Netwonian gravity - Jefimenko's theory of gravitation
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Graduate Is Principle of Relativity compatible with Magnetic force
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Graduate How inertial frame of reference differs from non-inertial frame?
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Undergrad Is true or is it another pseudoscience crap
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Graduate Calculating speed of spacetime
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Graduate General Relativity: Gravitational-Red Shift Confused with Doppler Effect?
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Graduate In virtue of what are energy and momentum additive?
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Graduate Ricci tensor for electromagnetic field
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Graduate The terms absolute and relative
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Graduate How to caculate the inverse metric tensor
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Graduate Limit to length of expanding spring?
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Graduate Conservation of Energy in Friedman Equation
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Graduate Does a 2 Light-Year Long Steel Bar Move Instantly When Pushed?
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Graduate Euler Lagrange equation as Einstein Field Equation
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Graduate What is the relationship between light rays and the equations of motion in GR?
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Graduate Possible 3rd Interpretation of the Michelson-Morley Experiment
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Graduate Travelling faster than the speed of light - SR
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Graduate Traveling Info: Images, Photons, Speed of Light
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Graduate Gravitionel redshift – How is it working?
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Graduate Special relativity and photon dimensionality
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Graduate Rigid body angular velocity limit
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Undergrad Is acceleration relative or absolute?
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Graduate Is Time Truly Absolute? Investigating Through Thermodynamics
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Graduate Is the Sum of Christoffel Symbols Equal to Their Negative in Tensor Calculus?
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Graduate Does SR actually forbid FTL travel?
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Undergrad Gravitational force at midpoint between 2 equal massive bodies
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Graduate Derivation of relativistic motion equations from action
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Graduate Does Friedmann equation allow for complex scale factor?
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Undergrad Can anyone explain this possible paradox?
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Undergrad Comparing Event Occurrence Across PORs
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Undergrad Confused about seeming recursivity of time dilation between two moving bodies
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Undergrad Learning Tensor Basics: Overcoming Difficulties
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Undergrad Does the energy of light depend on the observer's reference frame?
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Graduate Classic and relativistic 3-velocity
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Undergrad Has the One-Way Speed of Light Been Measured?
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Graduate MTW Gravitation Ex. 25.16: Comparing Equations & Expressing u_0 in \tilde{L}
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Graduate Free fall and blue shift question.
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Graduate Is there a frame of reference where events A and B are simultaneous?
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Graduate First historical experiment disproving Ritz emission theory?
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Graduate Nature of time, real or conceptual?
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Undergrad How Do You Convert GeV/c to m/s for Particle Velocities?
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Graduate Does the Black Hole Myth Hold True?
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Graduate Trip to Saturn: Constant Acceleration of 9.81 m/s^2 - Is It Possible?
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Graduate Reversal of proper time for a falling object
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Graduate Does Y See Events in X as Simultaneous?
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Undergrad Is there truly an object at rest in the universe?
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Graduate Distance/rate = t = sqrt[2d/a] = Same Proper Time ?
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Undergrad Noob time-space thought problem
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Graduate Derivation of the value of christoffel symbol
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Graduate How is traveling backward in time possible?
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Graduate How Does Relativistic Motion Affect Batman's Batship Shadow and Laser Image?
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Graduate Spacetime curvature observer and/or coordinate dependent?
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Graduate Is SR an approximation or a special case?
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Undergrad Newb Question Regarding Special Relativity
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Graduate Why do the electrons want the rest frame of the wire to appear neutral?
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Undergrad Question on Mass-energy equivalence
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Graduate How can we explain the behavior of interference patterns in different frames?
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Graduate Proper time in Schwarzschild Space
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Graduate Black hole why wouldn't this work
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Undergrad The speed of light and time travel
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