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.
High School Black Hole Observation: Outside Observer & Spherical Symmetry
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Undergrad Einstein's 1935 Paper on Wormholes & Modern Physics
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Undergrad Special Relativity: 3 Objects, Momentum & Time Dilation
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Undergrad What tests can falsify general relativity?
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Undergrad Why binary systems for gravitational waves?
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Undergrad Is Scale Factor a Scalar? Sean Carroll Invitation
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Undergrad Can the Spacetime Interval at a Singularity Change Our Understanding of Time?
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Undergrad Correcting General Relativity Effect on Atomic Time
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High School Velocity Addn Paradox: SR Postulate Explained
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High School What Happens When Light Approaches a Black Hole?
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Graduate Why Is Time Dilation Considered a Real Phenomenon?
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Undergrad Is Heart Rate Invariant in Different States of Motion?
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Undergrad Space - time and the illusion of time
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Undergrad Cross Product in E_u: Explaining Gourgoulhon's Text
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Graduate GBAR Experiment (CERN) - Genève
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High School Understanding the Stress-Energy Tensor & Solar Mass in General Relativity
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Undergrad Doppler effect - can't imagine how the frequency of light can change
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High School Is this explanation of gravity under General Relativity legit?
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Undergrad General Relativity: Angular Momentum, Gravity & Questions
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High School Light Speed Invariance: Experiments, Difficulties & Clarification
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Graduate Possible to publish a paper that contradicts Einstein's special relativity?
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High School Speed of Light: Questions Answered
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Undergrad Speed of light not an invariant in GR
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Undergrad What do physicists mean by "local degrees of freedom"?
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High School What Links High Velocities, Strong Gravitational Fields, and Time Dilation?
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High School Interested in Black Holes, Neutron Stars, and White Dwarf Stars
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Undergrad General relativity, Electromagnetism and Feynman Diagrams
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Graduate Gravitomagnetism: Derivation, Theory & Insights - Bill
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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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