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 The Order and Valence of Tensors
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Undergrad Proving Orthogonality of Vector w/ Schnutz Special Relativity Tensors
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Undergrad Open Problem in S.R. Pre-Determinism: Unresolvable Question
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High School Help understanding this derivation of relativistic Doppler
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Undergrad Deriving Einstein's Relativity Postulates from Minkowski Spacetime
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High School Understanding Symmetry: Navigating Observations and Asymmetry in Closed Systems
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Graduate Evolution of Scalar Field: Equation Demonstration
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High School Length contraction vs Space time
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Undergrad Measuring Speed of Light from Galaxies & Shapiro Time Delay
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Undergrad Time Dilation: Lorentz Transf. & Proper Time Equations
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Undergrad Frame dependency of accelerations
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High School A Speed of Light Theoretical Question
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Undergrad Basic question, harmonic coordinate condition algebra
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Undergrad Question about Mercury's orbit discrepancy
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Undergrad Volume of light cones of two events
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High School Why Do Newton's Laws of Motion Fail at Relativistic Speeds?
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High School Object's Velocity in Black Hole: Calculate Final Vel.
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Graduate Alpha Variation vs Cosmological Expansion: Basics Explained
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Undergrad Dark Energy vs Gravity: Expansion vs Contraction
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Undergrad Composite Galilean transformation in 2 dimensions
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Undergrad General Relativity within the confines of a Hilbert Space
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Graduate Time Travel to Future: Is There a Minimum Speed?
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Undergrad Motivation for the introduction of spacetime
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Undergrad Researching Causal Structure in Classical GR for Graduate Course
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Undergrad Did universe expand faster than speed of light?
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Undergrad Light deflection and geodesics
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High School "Length contraction" prior to observation/measurement
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Undergrad Defining Spacetime Coordinates
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Undergrad Why is B's clock in advance instead of A's?
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Undergrad Gravitational Waves: Questions from Josh on Mass & Space-Time
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Graduate Force Question – Einstein Gravitational Constant
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Undergrad Conservation of matter energy momentum tensor beyond GR
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Undergrad Understanding Falling with Horizontal Velocity
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High School Would time slow down tied to a nuclear-powered oscillator?
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High School Speed of Objects Falling to Black Hole Center
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High School Can a Photonic Boom Explain the Origin of the Universe?
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Graduate Calculate the Weyl and Ricci scalars for a given metric
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High School How Do Electron Orbitals Work at Relativistic Speeds?
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High School Understanding E=mc^2: Lorentz Contraction and Time Dilation Calculator
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Undergrad Does time dilation cause the speed of light to be invariant?
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Undergrad Geometric Interpretation of Einstein Tensor
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High School Photon: momentum without mass?
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Graduate Is Newton's third law of motion consistent with GTR?
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High School Trajectory of a photon in a moving box
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Undergrad Conditions necessary for a human to survive event horizon
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High School The Paradox of Mass Distortion in Collider Experiments
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Graduate Topology of Spacetime: Can Singularities and Fermions Co-exist?
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High School What happens to the matter inside a black hole when it dies?
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Undergrad Gravitational wave time variation
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Undergrad Solving Determination of Locally Inertial Coordinates
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Undergrad Proving Killing Vector of Static Spacetime - David
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High School Ether and Michelson-Morley experiment
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High School How can a light clock tick once per meter even when in motion?
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Undergrad Solving General Relativity's Schwarchzild & FRW Metrics
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Undergrad How can we visualize spin being invariant?
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Undergrad Time in gravitational reference frame?
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High School Do Gravity Waves and Sound Waves Share Frequencies?
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High School Why do objects always revolve around each other in space?
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High School Solving Special Relativity Problems: Interval vs Lorenz Equations
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Undergrad Einstein's E=mc^2 equation -- question....
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High School Solving the Paradox of Rope: Transmission of Info in GR
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High School Moving clock as seen by an observer at rest
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Graduate What is causing time dilation: Speed or acceleration?
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High School Einstein’s equivalence principle for a collapsed star
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High School Unraveling the Equivalence of Energy and Mass: A Scientific Perspective
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High School Just a Doubt -- can the Space Time Fabric be ripped or broken?
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High School "Forced Conclusion" in Train-Embankment Experiment
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High School Constancy of the Speed of light
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Undergrad Relativistic Kinetic Energy Derivation
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Undergrad What is the source of curvature in an accelerating frame?
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Undergrad Do the Energy-Momentum Transformations apply to Photons?
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Undergrad Time Dilation in Hypothetical Faster-than-Light Travel
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Undergrad Special theory of relativity argument
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High School Quantum Entanglement: Changes at E1 & E3 Affecting Particle A
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Undergrad Understanding Lorentz-Transformability & Invariant Operations
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High School Using Lorentz Transformations vs Time Dilation/Length Contraction
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Undergrad How Do Orbiting Black Holes Generate Gravitational Waves?
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Undergrad Relativistic Momentum: 880kg Spacecraft at 1/2 C
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Undergrad Relativistic Mass Oscillation & Gravitational Field at R
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Undergrad Relativity of Simultaneity: An Overview
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Undergrad Understanding the GR Twin Paradox: Explained in a Concise Video
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High School Four-position: not really a four-vector?
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Undergrad How Do Lorentz Transformations Affect Perceptions of Time and Distance?
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Undergrad Earth as Inertial Ref. Frame: Test Relativity's Precision
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High School DeBroglie Wavelength with Relativistic Electron
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Undergrad Lorentz Transformation: Writing in Different Forms
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High School Speed of light -- Why is it constant?
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High School What happens to the final image of a person falling into a black hole?
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High School Turning Einstein’s train thought experiment on its head
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High School Distinguishing inertial reference frames
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Special Relativity Comic Strip: Today's Edition
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Undergrad Project Greenglow: Is Anti-Gravity Possible?
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High School What is the gravitational effect an accelarated mass?
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High School Calculating c in Thought Experiments: Q&A for Physics Community
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Undergrad How does a photon view the universe?
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Undergrad Experiment to test the basic assumption of SR
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Undergrad Relativity: Coming to Terms 1: Starting Assumptions
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High School Where is the slowest point in terms of time?
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Undergrad Why Does Time Dilation Occur in the Light Clock Thought Experiment on a Train?
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High School Time Dilation: When Earth or Light Speed Travel?
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