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 Metric Tensor as Simplest Math Object for Describing Space
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High School Is General Relativity Incomplete Without Dark Matter and Dark Energy?
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Undergrad Gravitation vs Curvilinear Coordinates: Analysis of Weinberg's Book
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Undergrad What is the hyper-cylindrical line element?
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High School Negative potential energy and negative mass
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Undergrad Time Dilation, Clocks, & Gravity
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Graduate Boundary conditions on the Euclidean Schwarzschild black hole
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Graduate How to obtain components of the metric tensor?
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Undergrad Calibration of Minkowski Diagram: Explaining Invariance of S^2
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Undergrad Time as a Dimension: Exploring Galilean and Lorentz Transformation
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Undergrad Lorentz transformation validity
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High School In a cyclotron, the time to make it all the way around is Different
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Graduate Brain Overload: Comparing Proper Time, Ephemeris Time & Coordinate Time
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High School Understanding Black Hole Equations Conceptually
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High School How Can You Create a Physics-Based Video Game to Teach Relativity?
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Undergrad Time Dilation: One Year in Jupiter = How Many Years on Earth?
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Graduate Evaluate Covariant Derivative on Tensors
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High School Can Photons be in a Stable Orbit? GR Analysis
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Undergrad How do the Lorenz equations for time account for the movement of Alpha Centauri?
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Undergrad Variation of perfect fluid and Lie derivative
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Undergrad Static, Isotropic Metric: Dependence on x & dx
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High School Gravitational Waves: Mass Interaction Questions Answered
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Undergrad Square of the difference of four-vectors
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Undergrad Rest Energy in special relativity
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High School Black Hole Tensile Strength: What Happens at Planck's Length?
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Graduate EoM in Schwarzschild geometry: geodesic v Hamilton formalism
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Undergrad How is Simultaneity Defined in Spacetime Diagrams by A.P. French?
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High School Shape of Universe & Cosmological Principle
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Undergrad Area of the event horizon of a rotating black hole
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Undergrad Event and Cauchy horizons for a charged black hole
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Undergrad Is the Principle of Relativity different for different theories?
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Undergrad Can Born Rigid Motions Occur in Curved Spacetime?
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Graduate Two questions on the Stress-Energy Tensor
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Graduate Understanding the Relativistic Action for a Point Particle
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High School Why is interstellar travel so hopelessly difficult?
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Undergrad One way speed of light experiment proposal
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High School Conservation of Newtonian Force and the Invariance of Maxwell's Equations
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Undergrad Dimensionless coupling constant of gravity
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Undergrad Electromagnetism and relativity
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High School Muon Time Dilation: Earth vs Muon Perspective
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Undergrad On the Relativistic Twisting of a rotating cylinder (Max von Laue)
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Graduate GR index gymnastics -- Have I misunderstood something or typo?
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Undergrad Can a cosmologist cross an event horizon?
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Undergrad LIGO Discovery - A question about space-time properties
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Undergrad Relativism & Reality: Finding Length in Space
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High School Why is every event in spacetime limited to our present point
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High School Escape Velocity from Relativistic Sphere: Derivation & Intuition
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High School Question: What Makes Light Move & Why Does It Travel at 299792458 mps?
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Undergrad Space-Time: A New Vision of the Universe
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Graduate Multipole expansion of linearized field equations
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High School Can there be many Worldlines in 4D spacetime?
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High School Simultaneity in Special Relativity: Examining the Theory
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High School Why Do Bodies in Free Fall Change Position?
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Undergrad How Does the Michelson-Morley Experiment Challenge Classical Physics?
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Undergrad Can an Altered Thought Experiment Reconcile the Special Relativity Conundrum?
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Undergrad Why does relativity not affect the speed of light?
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Graduate Why isn't cosmological constant a mass of the graviton?
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Undergrad Are Evanescent Gravitational Waves Measurable
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High School Does red-shifted light cause expansion of space?
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Undergrad Searching Ether Frame: Introduction to Special Relativity
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High School Difference betwen space-like and time-like singularities
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High School Gravitational Force and the Endless Supply of Massless Particles
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Graduate Simple 1D kinematic exercises with metric tensor
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Graduate Schwarzschild coordinates beyond the event horizon
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High School Dark Energy & Expansion of Spacetime
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Graduate Radial, exterior, outgoing, null geodesics in Schwarzschild
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Undergrad Simultaneity Paradox in Space: What's Going On?
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Undergrad Is the Christoffel symbol orthogonal to the four-velocity?
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Graduate Perihelion Precession in GR with Robertson Expansion
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High School Do gravity and acceleration alter the speed of light?
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Undergrad Relativity and Eternalism: Proving the Possibility of 'Seeing the Future
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High School Question about energy-mass relationship
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Graduate Bell's spaceship paradox: after the thread breaks....
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High School Is it possible to reach the singularity?
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Undergrad Thought experiment- Dropping a rope into a Black hole
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Undergrad Relative Motion vs Time: Paradox Explained
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Undergrad The name of the 3+1 metric where time is normal to space?
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Undergrad Relativity Matter & Vacuum Energy: Stress-Energy Tensor
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High School Effect of Varying Distance on Radio Waves
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Undergrad How Much Thrust is Needed to Hover Above a Black Hole?
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Undergrad Special Relativity vs Newtonian Gravity: Understanding Their Compatibility
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Undergrad Relativity Paradox w/ Charged Spheres
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Undergrad EFE: Stress-Energy & Spacetime Curvature
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Undergrad Gravitational Waves Impact Earth's Orbit: Effects & Possibilities
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High School WSU Shows Negative Mass Exists: Implications for Faster-Than-Light Travel?
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Undergrad Time Dilation Exp: Answers to Questions on A & B's Experiences
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Undergrad What Is the Lie Algebra of the Lorentz Group?
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High School Error in Einstein's Biography on Twin Paradox?
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High School How is that light from the sun takes about eight minutes to reach us
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Undergrad Understanding Lorentz Transformation on Scalar Fields
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Graduate Asymptotically Anti de-Sitter Spacetimes
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High School Why does light move at the speed it does
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High School Time dilation of an orbiting ship
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High School Triplet Paradox and Thought: The Mystery of Time Dilation
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Undergrad Does Traveling Through a Wormhole Affect Time Dilation?
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Undergrad Proving the Wedge Product of 2 One-Forms is a 2-Form
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High School Does Light Speed Affect Mass of Surrounding Objects?
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High School Space Dilation Interaction Between Two Masses
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Undergrad Vector Notion in GR: A Tangent Space at p
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Undergrad Two Clocks Orbiting a Non-Rotating Planet: Questions Answered
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