Special and General Relativity Forum

Graduate How Do We Detect the Charge of a Black Hole?

Graduate Update on Devasia Santosh's Lorentz Violation Research

Graduate Calculate Bending of Light: Find the Middle Point

Graduate Calculus of Variations in General Relativity

Graduate Why does length contraction give L = γL₀ instead of L = L₀/γ?

Graduate What Graphs Show Time Dilation for a Twin Traveling at Light Speed?

Graduate Does a bouncing light clock reveal absolute motion or light time dilation?

Graduate Do all observers agree on the age of our Universe?

Graduate Rest Length, Coordinate Length, and an argument for True Length

High School Where can I find resources for learning Relativity as a high school student?

Undergrad How would two massive bodies effect eachothers gravity?

Graduate T constant lines in Minkowski Conformal Diagram

Undergrad Why does a moving clock measure longer time if it ticks slower?

Graduate Observing objects while traveling near light speed

Graduate Faraday tensor gauge invariance on manifolds with torsion

Graduate Why Does FTL Travel Lead to Time Paradoxes?

Undergrad Does incurvation of space requires energy?

Graduate Intersection of bars moving at v>c

Graduate Velocity of our universe through time?

Graduate Measuring Light Speed with MMX in Water

Graduate Transformation law in curved space-time

Graduate Learning Light Cones: Seeking Understanding

Graduate Do field lines spread apart in expanding space?

Graduate Why Does Jill See Bob's Speed Differently in an Alternate Universe Race?

Graduate Let a clock A be at rest in an inertial frame and let a clock B rotate

Graduate How does the concept of light cones relate to time travel?

Undergrad Why does the sphere's bottom curve spacetime, not its center?

Graduate Causal structure of spacetime: intuitive reason for non-compactness?

• Poll

Graduate Does traveling at light speed stop time and aging?

Graduate Single positive electric charge in a closed universe

Graduate Killing vectors of minkowski space

Graduate More questions about relative speeds.

Graduate Does Einstein's Theory of Relativity Substantiate the idea of Time Travel?

Graduate Frame dragging from a light beam

Graduate Pioneer 10 Anomaly: Revising GR Physics Model with Intriguing "Nudges

Graduate Why are contravariant and covariant components both conserved in Schwarzschild geodesics?

Graduate Geometry Behind g_μν Λμ ρ Λν φ = g_ρ φ ?

Graduate Does the metric have to be symmetric? Why?

Undergrad Condition for a particle to move relativistically

Graduate Is the growing block universe compatible with special and general relativity?

Graduate Relativistic correction for gravitational acceleration

Graduate How long does it take to reach the singularity in a free fall at r=0?

Graduate Is the concept of relativistic mass correct?

Graduate Is it possible rapid increase impact account for perception of time dialtion?

Graduate Can an EM Stress-Energy Tensor Exist with Equal Sigma-Values?

Graduate Inconsistency in Landau-Lifschitz Classical Theory of Fields equation 231

Graduate Do Photons Have a Gravitational Effect?

Graduate Density of an object in Relativity

Graduate Does the stadium paradox refute quantized space in relativity?

Graduate What are the representations and generators of Lorentz and Poincare Groups?

Undergrad How Does General Relativity Challenge Newton's Elliptical Orbits?

Graduate How gravity changes photon frequency in the Pound-Rebka experiment

Graduate Relativity of Simultaneity: Train-Platform Experiment

Graduate Einstein GR is dead, viva Einstein-Cartan Gravity?

Graduate Geodesic equation via conserved stress tensor

Undergrad How Does Stephen Hawking's Theory Connect Time and Mass?

Undergrad What is the difference between time dilation and length contraction?

Graduate The logic of information travel.

Graduate Parallel light beams converge?

Graduate Spacetime, gravitational force

Undergrad Why is mass-energy equivalence expressed as E=mc²?

High School How does electromagnetic induction work with the two-wire current example?

Graduate Question on weak field approximation

Graduate Does the formation of a black hole start with QM?

Undergrad Is the concept of relativity portrayed accurately in Ender's Game?

Undergrad Why doesn't light escape black holes if gravity travels at light speed?

Graduate Acceleration from curved spacetime

Graduate Gravitational Collapse of a Cylinder

Graduate Does light have mass and does it affect light's speed?

Graduate Did Einstein deserve all credit for relativity theory?

Graduate Improper Lorentz transformation

Graduate How does QFT address the problem of Locality in Quantum Entanglement?

Graduate Mass of fuel would ALSO increase as spaceship comes near the speed of light

Undergrad Increase of mass and legth contracts with speed?

Graduate The experience of the infalling body of an EH

Graduate A tachyon is a hypothesized particle that has imaginary mass

Graduate What would actually be observed during Lorentz contraction?

Graduate Why does F_μν F^μν equal 2(B² - E²/c²)?

Undergrad Einsteins Vs Newtonian Solution

Graduate Does GR imply small Lorentz violations in practice?

Graduate Gravity effect on observed speed of light

Graduate Lorentz transformation gives negative time for event (10^100 m, 1 sec)

Graduate Can a relativistic particle create another particle and accelerate it to near light speed?

Graduate Reissner- Nordstrom metric- weak energy condition

High School Did the Michelson-Morley experiment disprove the ether?

Undergrad Why doesn't running on a fast train exceed light speed?

Graduate Why does General Relativity break-down at Plank Temperature?

Graduate Searching for Lecture Notes on Lie Groups from Physics Course

Graduate Perihelion precession of Mercury

Graduate Expansion, redshift, energy loss

Undergrad Understanding Proper Time in Einstein's Special Theory of Relativity

Graduate Why Are the Terms Squared in the Lorentz Transformation?

Graduate Reconciling Energy Losses on Fast Moving Batteries

Graduate Where can I find a covariant approach to Poisson brackets?

Graduate Constatly accelerating spacecraft

Graduate Whose Clock Slows Down in Relativity?

Graduate Is Einstein synchronization trivially true?

Graduate Freely Floating Observer Crosses Event Horizon

Graduate Faster than the speed of light during acceleration?