Special and General Relativity Forum

Graduate Math Applying Einstein's Theory of General Relativity

Graduate Observing Kerr Singularity: What Would an Observer See?

Graduate Mathematical Considerations of Spacetime in Classical Mechanics

Graduate Is the Light Clock Calibration the Key to Understanding Relativity?

Undergrad Time Dilation: Do Astronauts See Events on Earth Slower?

Graduate What Happens During Accretion to a Primordial Black Hole?

Graduate If you're traveling at the speed of light, then time stops

Graduate Is the Relativity of Simultaneity Always True?

High School Does space move? What is space?

Undergrad Is All Motion Truly Relative to Space?

Undergrad Around the Earth Clock: Does Special Relativity Hold True?

Graduate Gravitational Effects of Gyros Near a Massive Object

Graduate Length contraction in diagonal motion and something strange?

Graduate So, what exactly do we mean by flat space?

Graduate Notational clash in index notation?

Graduate Maximum angular momentum for charged black hole?

Graduate What would GRT look like if negative masses existed?

Graduate Coordinate Translation Vectors & Covectors

Graduate Accretion in Extreme Conditions: PBHs & More

Graduate Cosmology Chapter Mistake: Reflections on Relativity

Graduate Mapping Space with Clocks: Deduce Distances/Observers w/ Constant Light Speed

Graduate Length contraction and time dilation in spacetime

Graduate MTW Ch7: Choosing Lagrangian for Scalar Potential

Graduate Existence of affine parameters of null geodesics

Graduate Velocity of Accelerated Observer in SR: Understanding the Paradox

Graduate Understanding the Role of Tensor Calculus in General Relativity

Graduate Piezoelectric Effect: Length Contraction & Dipole Moment

Undergrad Relativity & Spacetime: Interval Explained

Graduate Relativity & Distance-Time: Is It True?

Graduate Partial derivative with respect to metric tensor

Undergrad Is there mass if there is no gravity?

Graduate Is Quantum Space-Time a Real Possibility?

Graduate Solve Relativistic Momentum PROBLEM - Extra Factor of u Explained

Graduate Could Lorentz Violations Occur in Vacuum Deep Inside Celestial Bodies?

Graduate Measuring Light Frequency: Does Newton's Law Apply?

Graduate Why no absolute derivative in this example of geodesic deviation?

Graduate How Does Relativity Affect Time Measurement in Thought Experiments?

Graduate Aging Without Movement: How Long Would We Live?

Graduate Can light exist without space time?

Undergrad Not a scientist, just wondering -- Shining a laser pointer into space

Graduate Does the Sagnac Effect Indicate Rotation in Non-Rotating Gyroscope Frames?

Graduate Black Hole Hawking Radiation: Frame-Dependent Virtual Particles

Graduate How Can a Photon Oscillate with a Frequency If Time Stops at Light Speed?

Graduate Space-Time Projection on Space

Graduate Help with Exercise 7.1 - MTW Chapter 6

Graduate Uncovering the Reality of Space-Time: Separating Fact from Fiction

Graduate Can You See Your Reflection While Traveling at Light Speed?

Graduate Speed of light and planck length

Graduate Variation of the Christoffel Symbols

Graduate Is there a minimum speed in the universe besides the maximum speed of light?

Graduate Poincare Transformations: Parametrization-Independent

Graduate Stress and pressure as gravitational source

Graduate Time Dilation, Twin paradox etc.

Graduate Understanding Minkowski Space Metrics: The Sign Reversal Mystery Explained

Graduate Newtonian and GR Friedman equation

Graduate How does one get time dilation, length contraction, and E=mc^2 from spacetime metric?

Graduate How do you derive relativistic tensors in an orthonormal basis?

Graduate Geodesics - Some help, please.

Graduate Time dilation on the surface of a planet and escape velocity time dilation

High School Explaining E=mc²: Simplified for 12-Year-Olds

Graduate Perception of faster than light travel?

Graduate Do all elements of the stress energy tensor really have the same units?

Graduate Deriving the Expression for Total Energy: Understanding E = gamma mc^2

Graduate Doppler Shift of Light: Visible-to-UV Properties?

Graduate Can't Tell If you are shrinking?

Graduate Re-Examining Black Holes and the Standard Model

Graduate Can Space Curve Faster Than Light?

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Undergrad Will Distance Between Footsteps Change When Walking Near Light Speed?

Graduate Spherical EM Wave: Origin at t=0, S & S' Agree?

Graduate Null Hypersurface: Building a Tangent Surface in 2 Dimensions

Graduate What Are Tension Shells and Tension Stars in Israel Formalism?

Graduate Special Relativity as a source of Power?

Graduate Energy Momentum Tensor - General Properties

High School How Does Gravity Affect Rocket Launches from Different Points on Earth?

Graduate EM Wave Equation in Higher Dimensions: Gravitation Text

Graduate Can I Prevent Black Hole Formation?

Graduate An apparent paradox with couple of frames

Graduate Deriving the Schwarzchild radius?

Graduate Equations of Gyrostatic Aether: McCullach & Kelvin

Graduate Does Antisymmetrization in Wedge Product Skip Basis Effects?

Graduate Why Do We Discuss Light Cones and Black Holes If There's No Light Present?

Graduate Time Travel: Does General Relativity Allow It?

Graduate Relativistic Particle Action: Minimize Length & Avoid Problems

Graduate Why Can't We Do Algebraic Methods with Tensors?

Undergrad Does Light Have Mass? Astrophysics Discussion

Graduate Derivations of Einstein field equations

Graduate Does Einstein's synchronization scheme have hidden assumptions in SRT?

Graduate Question concerning speed of light in reference frames

Graduate Does object gain mass when spinning?

Graduate FTL Communication: The Long Pole Experiment & Modification

Graduate Conservation of Energy & Momentum: Solve for v2

Graduate Solving Dimensional Analysis Problems in Stress Energy Momentum Tensor

Graduate How Do Light Cones Differ in Accelerating vs. Decelerating Expansions?

Graduate Event Horizon Properties for Incoming Matter Explained

Graduate Special Relativity Equation: Is This Accurate?

Graduate Time Dilation Issues: Expert Answers

Graduate Educational paper and video, Bertozzi, "The Ultimate Speed"

Graduate Growing Black Hole Metric Approximation: 2MG/c^2

Graduate Is Special Relativity Testable?

Graduate Sagnac Effect on Equatorial Plane: MG-P Exp & GR Twist