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 Does rotation in Gödel spacetime depend on the frame of reference?
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Graduate What Does a Zero Metric Mean in the Context of Pre-Big Bang Physics?
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High School Do photons travel instantaneously?
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Undergrad Coincidence of FLWR & CBR Homogeneity: Earth @ 0.0013c?
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Undergrad Is acceleration absolute or relative - revisited
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Graduate Obtain Normal Vector of Bubble Wall in Spacetime
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Undergrad Why was Schrodinger's equation for the relativistic wave unsuccessful?
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Undergrad Does string theory falsify the theory of special relativity?
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Undergrad Crossing Event Horizon: Physics of Disintegration?
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High School Metric tensor for a uniformly accelerated observer
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Undergrad Speed of Light in Different Mediums: Exploring Maxwell Equations
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Undergrad Derivation of E=pc & E=MC2: Which Came First?
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High School Is Gravity Really a Force? A Look at General Relativity's Perspective
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Undergrad Calculating Distance Light Travels Near a Black Hole
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Undergrad Understanding Relativity: How Moving Objects Experience Near Light Speed Travel
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Undergrad Decompose SL(2C) Matrix: Real Parameters from Complex
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Undergrad Explore Coordinate Dependent Statements in Orodruin's Insight
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Graduate Is There a Unified Theory Between General Relativity and Electromagnetism?
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Undergrad Equations of Spacetime Invariant - Understanding the Difference
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Undergrad Gravitational Waves Emitted by a Binary System
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Undergrad Solving GR 2-Body Problem with Summ. of Christoffel Symbols
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Undergrad Would circumnavigating the Universe allow one way measurement of light's speed?
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High School Energy Conservation in Relativity: Perpetual Motion?
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High School Redshifted Photon Emission vs Transport: Magnitude of Gravitational Redshift
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Undergrad How Do Dual Vectors Differ From Regular Vectors in Physics?
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Undergrad Klein-Gordon: Schwarzschild Metric, Physically Acceptable?
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Undergrad Is the premise of the Michelson–Morley argument still valid?
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Undergrad Interpretation of Potential Energy as Field Property
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Undergrad Compute EOM for Spin Connection from Einstein-Palatini Action
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Undergrad Calculating Time Dilation & Galaxy Rotation Curve
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Undergrad Solving the Flickering Light Paradox
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Undergrad Compute Gradient in GR: Step-by-Step Guide
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Undergrad Source of Gravity of heavy mass as per GTR
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High School What Happens When Light Meets Matter in the Universe?
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High School Is time a true variable in the scheme of things?
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Undergrad Gravity on Earth: Basic Qs Answered by Physicists
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Undergrad Movement of a guitar string at relativistic speeds
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Graduate The "no metric, no nothing" view
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Undergrad Can Time Travel Into the Future Really Happen?
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Undergrad 4 spaceships are pulling a membrane through an asteroid belt
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High School Why do you need a light clock?
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High School Comparing Rates: Why Don't Units Cancel?
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Undergrad What is the four-momentum of a photon?
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Undergrad GTR & STR: Could 9 Dimensions Unify Theory?
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High School Measuring the One Way Speed of Light
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High School On the four dimensions of special relativity
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High School Understanding the Relationship Between c and c2 in the Famous Formula e = mc2
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Undergrad Cosmic Censorship: Does it Hold?
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Graduate Understanding Kerr Black Holes: Metric, Killing Vectors & Event Horizons
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Graduate Temp of Moving Body: 110 Yrs of Debate | Current Tech Update?
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High School Explaining Spaghettification w/ Spacetime Curvature
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Undergrad What is the Role of Matter in General Relativity's Lagrangian?
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Graduate Understanding Tensor Notation: What is the Difference?
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Undergrad Relativistic Velocity, Perp. Accel., Momentum: Explained
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High School A few questions about the covariant derivative
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Undergrad Gravity: Compounded Space (Time) Signal?
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Graduate Geodesic Eq Derived from Einstein Field Equations?
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Undergrad Disappearing Sun: A Thought Experiment on the Effects of Gravity and Light
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Undergrad Conservation of energy in general relativity
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Undergrad Recovering Newton's energy conservation law for an Earth's lab
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Undergrad Is coordinate speed affected by gravitational waves?
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Undergrad Hawking Radiation: Info vs Semanticity? - Hossenfelder
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Undergrad Spacetime invariance algebraic proof
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Graduate The g_ij as potentials for the gravitational field
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Undergrad The Sub Photon Sphere Escape Game
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Undergrad Unravelling the Mysteries of the Kerr Black Hole Ergosphere
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Undergrad Radius Excess of Curvature in Relativity: Explained
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High School Understanding the active/passive transformation of a scalar field
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High School Light Clock: Why Aren't Delta T and 2D/c Equal?
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Undergrad Investigating The Photon Sphere
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Undergrad Solving Relativistic Inelastic Collisions: 150 GeV Energy
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High School Transforming the Electric Field Measured by an Observer with 4-velocity U
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Undergrad Solving the Spherically Symmetric Einstein Equation
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High School Gravitational Wave System and Locations
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High School Who Won the 2020 Nobel Prize in Physics and What Did They Discover?
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High School Value of this 'Science' Channel as quick intro
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Undergrad Observing Black Holes in Finite Time
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Undergrad Self-Study General Relativity: After Multivariate Calc in HS
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High School Paradox of Simultaneous Flashing in a Moving Triangle of Lights
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High School How can two ships pass each other twice at the same moment?
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High School Mass Reduction in Combustion: Real or Myth?
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Undergrad Speed of Sound & Light: Is it True?
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High School Contradictory time dilation equations
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Undergrad Is Teleportation & Time Travel Possible?
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Undergrad What software can I use to make space-time diagrams?
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Undergrad Riemann Curvature Tensor on 2D Sphere: Surprising Results
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High School Event horizon for observer within main horizon
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High School E & B Field Oscillation with Time Dilation: Explained
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Undergrad Does time dilation cause different aging rates for people?
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Undergrad Precession of Mercury: Adaptation for Observers
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Undergrad How to communicate between planets?
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Undergrad Thought Exp: Gen Relativity & Time Dilation
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High School Twin Paradox: Radioactive Decay Tested
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Undergrad Velocity Addition and Doppler Effect: Explained
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High School How to derive the continuity equation for a perfect fluid?
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High School First Experimental Confirmation of GR
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Undergrad Are Derivatives of the Metric Different in Flat Spacetime?
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Undergrad Magnetic Field Generated By Moving Charged Objects - Confusion Explained
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Undergrad Dissolving Event Horizon w/Charged & Rotating BH
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High School Time Travel Possibility with Two Black Holes Orbiting Each Other
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