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 Special Relativity vs Lorentz Transformation: Difference Explained
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Undergrad Is the four current in Relativity an invariant quantity?
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Undergrad Sending Signal from Planet Near Gargantua: A Thought Experiment
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High School Is Any Material Truly Incompressible Under Special Relativity?
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High School Time & Special Relativity: Is Time Object-Specific?
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Graduate Validity of theoretical arguments for Unruh and Hawking radiation
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Undergrad Transformation of the contravariant and covariant components of a tensor
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Undergrad A shot in the dark -- Need help understanding Special Relativity
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Undergrad Ligo Heat Dissipation: How Do They Protect Mirrors?
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Undergrad One Way Speed of Light: Is it Constant?
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Undergrad Struggling with a special relativity "paradox"
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Graduate Parallel transport of a 1-form aound a closed loop
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Graduate Christoffel Symbols in terms of a Change in Basis
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Undergrad Electric Field Directly Ahead of or Behind a Moving Charge
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High School Calculating Triangle Area in Relativity Theory
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Undergrad Ricci Tensor: Covariant Derivative & Its Significance
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High School Time in Cartesian Coordinate Systems: Math Q&A
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Graduate Schwarzschild Metric Geodesic Eq: Qs & Answers
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High School Reaching the Speed of Light: A Thought Experiment on Halving Distance Traveled
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Undergrad Explanation of Galilean transformations
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High School What path does matter take after entering a black hole?
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Graduate Kinnersley’s “photon rocket” and gravitational radiation
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High School Does Godel's Rotating Universe Theory Suggest Time Repeats Itself?
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Graduate Weyl transformation of connection and curvature tensors
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Undergrad Why does Special Theory of Relativity leave out Potential Energy?
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Undergrad Gravitational interaction between three bodies
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Undergrad An observer passing the event horizon of a black hole (Part 2)
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Graduate Why Does the Energy-Stress Tensor Exclude Other Forces?
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High School Eddington's 1919 Eclipse: Photon Deviation & Redshift
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Undergrad Event Horizon Gravity: Infinite or Not?
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Undergrad Can Time Dilation Probes Redefine Our Understanding of Space and Time?
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High School Interstellar Movie: Light Reflection on Planet Close to Event Horizon
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Graduate Detecting Gravitational Waves: Antenna Sensitivity & Weber Bars
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Undergrad What is the Invariant Mass of Two Perpendicular Photons?
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Undergrad Energy Density in SR Energy-Momentum Tensor
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Undergrad Solve E = mc^2 & Time Dilation Equation
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Undergrad Getting Used to Killing Vector Fields: Explained
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High School Do Perpendicular Velocities Affect Relative Motion?
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Undergrad Time Dilation Effects of Travel to Star 10ly Away
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High School Is Time Dilation Indicating the Existence of Multiple Times?
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Undergrad Special Relativity Controversy: Solving the Paradox
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Undergrad The Tensor & Metric: Spacetime Points & Momentum Flux
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High School The Fourth Dimension: A Measurement of Aging
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Undergrad An observer passing the event horizon of a black hole
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Undergrad Deriving the 4-momentum of a free particle moving in curved spacetime
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Undergrad Time Dilation: Clock A & B Confusion
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High School Agreeing on relative separations and accelerations
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High School Why Does Matter Fall to Center of a Mass? Explained
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High School Apparent contradiction in time dilation
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High School Development of Special Relativity
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High School Time Travel: How Does a Fast Electron Experience Sunrise?
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Undergrad Relativistic Notation in Waves: Confusion Solved
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Graduate Lorentz Transformations: Why We Need the Same $\gamma$
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High School Relativistic explanation of electromagnetism
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Undergrad One Way Twin Revisited: Understanding Tim & Tom's Watches on Home & Northbound
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Undergrad LIGO Gravitational Wave Detection News
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High School SR Thought: Spacetime Interval w/ Bounds of ##0<\alpha<1##
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Undergrad Energy Momentum Tensor: Real Physics & Cosmology
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Graduate Heuristic Approach EFE: Why 10 DOF?
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Graduate Difference of Christoffel Symbols Transforms as Tensor
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High School What Causes Moving Clocks to Measure Slower? Explained
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Undergrad What Happens When a Planet Nears the Speed of Light Near a Black Hole?
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High School Kinetic Energy of an Object Falling Into an Event Horizon
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Graduate Solving Shapiro Delay Problem w/ Approximations: Q&A
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Graduate Can Photon Have Orbital Angular Momentum?
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Undergrad The Simultaneity Paradox: Investigating Net Rotation of a Balanced Beam
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High School Can someone tell me if I got this line from the Feynman lectures right?
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Undergrad Speed Difference of Time on Poles vs Equator of Earth and Other Planets
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High School Gravitational Time Dilation in L1 Point: Summed, Canceled or Else?
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Undergrad About the solution of the parallel transport equation
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Undergrad Four-momentum & four-acceleration in GR - Physics Discussion
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High School Absolute Time, I know its wrong and all but tell me if I got it right
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High School Can Dropping Stuff Challenge Einstein's Relativity Theory?
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High School Misunderstanding of "proper velocity"
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Undergrad Does p=mc Apply To Photons? | A.P. French's Special Relativity
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Undergrad E=mc^2 Mass: Rest Mass m0 vs Relativistic Mass γm0
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High School Would Earth fly off into space if the Sun disappeared?
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High School Some questions about the Doppler Effect at high velocities
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Graduate Continuity Equation for fluid in a curved spacetime
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Undergrad What happens in the area between black holes before they collide
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High School What is Absolute Time and Space?
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High School Plotting the Space-Time Continuum: Is it Possible?
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Undergrad How it's known that the variational principle works for relativity
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High School Clarification of Romer's Calculation
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High School Question About Lorentz Contraction: Red vs Blue?
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Graduate Stress-energy tensor of a rotating rod
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Graduate Birkhoff's theorem with cosmological constant
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Undergrad Deriving AdS Poincare Coordinates from Global Coordinates
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Undergrad Does Gravity Affect Mass Measurement in Flat Spacetime?
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Graduate Doubt about Energy Condition in Wormhole: Integral Along Null Geodesic
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High School Time Difference for High-Speed Travel: Asymmetric by Special Relativity
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Graduate The derivation of the volume form in Ricci tensor
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Undergrad Muons Decaying on Mt Washington: Expert Answers
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Undergrad Speed of Light in Inertial Ref Frames: Photon Perspective
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Undergrad Momentum and energy calculation in special relativity
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Undergrad Metric compatibility? Why is it an additional property?
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Undergrad Gravitational Waves: Difficulty Level of Study?
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High School Types of Metrics: Background & Reference Explained
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Graduate Calculating Nabla w V in General Relativity
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Graduate Time Measurement in MT Traversable Wormholes - Help Needed
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