Special and General Relativity Forum

Undergrad Are Time Dilation and Length Contraction Proven by Experiments?

Graduate Does Gravity Pass Through Barriers?

High School What Causes Gravity to Attract Objects?

Graduate What Happens to the Twins in the Twin Paradox with Acceleration?

Graduate Distance Between Two Bodies: Am I Correct?

Graduate Is Energy Conserved in General Relativity?

Graduate Time Dilation and Synchronization in Special Relativity

Undergrad Theory of relativity sets limits

Graduate What Is the Physical Interpretation of a Non-Metric Compatible Connection in GR?

Graduate The Equivalence Principle-bending of light

High School How long till we can travel into the future?

Undergrad Gravitation Questions: Introduction and Theory by Allen

Graduate What is the relationship between energy, matter, and space-time?

Undergrad A question about mickelson& morli experiment

Undergrad Can someone explain the twin paradox to me

Undergrad Relativity vs Newtonian Physics

Undergrad General Question about Einstein's Theories.

Graduate Time Dilation & Frame of Reference: Who's Time Slows Down?

Graduate Special relativity and frames of reference

Graduate Does Time Dilation Apply to Objects Moving at Sub-Light Speeds?

Graduate Einstein's 1912 Paper: Debunking Myths and Misconceptions

Undergrad Can photons change direction or slow down near a black hole?

Graduate Is the universe expanding faster than the speed of light?

Graduate Ok lets say there is a ship 100ft long moving at .90c. a planet

Undergrad Einstein's theory of Special Relativity

Graduate Is There a Preferred Frame? Understanding PR & GR

Graduate Wikipedia's article on black holes

Graduate Special Relativity handling acceleration

Graduate Strange implications of NASA's Gravity Probe B

Undergrad How do I calculate the area of a circle drawn on a sphere?

Graduate Wormholes mean changes to Relativity?

Undergrad Understanding Relativity: A Quick Overview of General and Special Relativity

Graduate Question on the age of universe

Graduate Is Time Dilation a Measurement Phenomenon?

Graduate Why Can't a Uniform External Gravitational Field Raise Tides on Earth?

Graduate Time Dilation & big bang Question

Graduate Einstein's warping of space-time as a theory of gravity

Graduate Increasing mass, decreasing force?

Graduate The Peripatetic Albert, Round 3

Graduate A quickly oscillating mass produces a gravitationnal wave

Graduate The Soccer Ball Problem in Relativity

Graduate Whatever happened to testing relativity?

Graduate Some thoughts I've been thinking about.

Graduate Does Time Really Exist? Debunking Common Beliefs

Undergrad Kinetic Enrgey according to another viewer

Undergrad Is There a Place in the Universe That is Truly at Rest?

Graduate What If the Speed of Light Were No Longer Constant?

Graduate Special Relativity in an (in)finite universe

Undergrad Einstein's Theory of Mass-Energy Conversion: True or False?

Graduate Converting Energy into Matter: Is it Possible?

Graduate A Revolutionary Idea: Rethinking Time Measurement in Physics

Graduate Do tachyons exist or not?if so causality will be failed

Graduate What Are the Theories Behind the Origins of Our Universe?

Undergrad Why Isn't the Universe Just a Big Black Hole?

Graduate Common Errors in Anti-SR Theory: Syncing Distant Events

Graduate Binary pulsars and general relativity

Graduate Michelson Morley and Paul Marmet

Graduate How Does Relativistic Doppler Shift Affect Emitted Waves and Mass?

Graduate Relativity for people who insist on having a true physical time

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Graduate Is Time Dilation Just a Misunderstanding?

Graduate How does speed affect perceived time in David W. Hogg's SR Book?

Graduate What Happens When You Fall Into a Black Hole?

Graduate String-mass near the speed of light

Graduate Hovering in gravity makes curved space flat?

Undergrad Why are the fundamental postulates of special relativity controversial?

Graduate Quantum blended with a little SR

Graduate Christoffel symbols in the Schwarzschild metric

Graduate How Small Could the Universe Get in a Big Crunch?

Graduate What are some suggestions for books on general relativity at the graduate level?

Undergrad Settle a Dispute: Falling Objects & Relativity

Graduate What causes the bending of space and time by concentrations of mass and energy?

High School Can the equation E=mc^2 be used as a measurement tool?

Graduate Is length contraction relative or absolute?

Graduate A New Test of the Equivalence Principle?

Graduate Maxwell equations and special relativety

Graduate Answering Questions on Speeds & Waves in Relativistic Space

Graduate Can an astronaut actually reach the singularity of a finite lifetime black hole?

Graduate Does Traveling at Light Speed Reveal More of the Universe?

Undergrad Solving Problem 2-8: Relative Velocity and Time Elapses

Graduate Interpretation of GR: Change in Einstein's Understanding

Graduate When do clocks on an airplane and on the ground differ by 1.0 s?

Graduate Relativity and fuel consumption

Graduate Answering Relativity Questions: Earth, Spacecraft, Lorentz Transforms

Graduate The Sled and the Hole Paradox in Special and General Relativity Explained

Undergrad What is the relative speed of an object standing still on Earth?

Graduate If Time and Space Are Relative Concepts, Then

Graduate Interpretation of GR: Einstein vs. Contemporary Physicists

Graduate Schwarzschild metric and BH mass

Graduate Is Block Time in General Relativity Proof of a Fixed Future or Many-Worlds?

Graduate The End of the Universe from the Outside In - as free-faller nears singularity

Undergrad Is Gravitational Red-Shift a Valid Concept?

Graduate Time & Acceleration: A Relativity Puzzle

Graduate The Speed of Light: Relative to Us?

Graduate How Does Earth's Rotation Speed Influence Frame Dragging Effects?