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 Speed of Light from Car Headlights & Brake Lights
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Undergrad Time: Questions for Curious Minds
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Undergrad Understanding Wormhole Solutions to the Einstein Field Equations
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Undergrad Rotating Black Holes: Q&A with First-Time Poster
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High School Is Flatness a Relative Term in the Universe?
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Undergrad Does Planck Time Imply an Acceleration Limit?
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Undergrad What Are the Intriguing Questions Surrounding Time Dilation?
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High School Can velocity be determined in flat space?
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High School Spotting a Black Hole in the Microwave Background
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Undergrad Stretching a rubber band increase its mass but how?
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High School Visualizing 3D Contours of Spacetime
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Undergrad Help with Newtonian Gravity as Limit of General Relativity
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High School Special case of the twin paradox in special relativity
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Undergrad Magnetic Charges & Lorentz Invariance: Finding Papers
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Undergrad Help Understand Retarded Function: Einstein Eq. Linearized
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Undergrad Does global topology lead to a preferred frame in SR?
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Graduate Lack of uniqueness of the metric in GR
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Undergrad Writing Components of a Metric Tensor
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Undergrad Why do physicists show the magnetic field perpendicular to F
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Undergrad Rod falling through the event horizon of a black hole
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Undergrad Gravitational Waves & Energy: Is There a Consensus?
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High School Do Twins Age Differently in Space?
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High School Schwarzschild Radius: Compression Inside Black Holes
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High School Space Bending: Questions Answered
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High School A light beam that never interacts with matter
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High School Is the Speed of Light Affected by Human Measurement Methods?
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Graduate The Mystery of the Minus Sign in Geometry, Topology, and Physics
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High School Why is E=mc² Defined with c Squared?
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Undergrad How can the Equivalence Principle hold when we consider tidal forces?
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High School Is Time Just a Perception or a Fundamental Aspect of Spacetime?
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Undergrad Complex Isomorphism Error in Lorentz Transform
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High School Resistance of Space-Time fabric
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Graduate Isotropic metric and circumference of sphere
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Undergrad Understanding Electromagnetism & General Relativity
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Undergrad Generalized Tetrad Formalism for Rotating Spacetimes and the Equatorial Plane
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High School Acceleration of Particles: Black Holes & Speed of Light
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Undergrad Why Are Equally Spaced Events Preserved in Transformation?
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Undergrad Help with Anti-Relativity activist
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Undergrad Michelson Morley Experiment Light Source
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Undergrad Why does time have to be a complex (Minkowski metric)?
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Undergrad Interaction Term in EM Lagrangian - Explained
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Undergrad Solve Electromagnetic Field Acting on Charged Particle
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High School Learn Relativity Theory: Math Education Needed?
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Graduate Relativity: Is "c" Speed in Vacuum Only?
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Undergrad Stretched spring and change in mass
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High School Do black holes have a world line?
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Undergrad Compute Relativistic Velocities of Photons & Neutrinos
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High School A universal compass/speedometer
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High School A question of why time dilates and what is described by it
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Graduate Connection, Metric and Torsion
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Undergrad GR as a Graded Time Dilation Field in Euclidean Space?
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High School Calculate Speed of Relativistic Rocket by Observation
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High School Are objects moving relative to each other?
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Undergrad Differential Forms in General Relativity: Definition & Use
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High School Measurements within our solar system with relativity in mind
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Graduate Physical interpretation of Pauli-Lubanski pseudo-vector
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High School Can we travel faster than the speed of light?
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Graduate Transfer Momentum Along Axis by Torque: Special Relativity Analysis
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High School The moon and light that bends around it
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Graduate Penrose Process & Hawking Area Theorem Explained
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Undergrad Index Notation, Covector Transform Matrix Rep
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High School Measuring Rest Length While Moving
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Undergrad GR: How Much Mechanics is Involved?
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Insights General Relativity as a Gauge Theory - Comments
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High School Why is there a limit to the speed of light in special relativity?
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Undergrad Theoretical problem with an empty seat going faster than light
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Undergrad Geodesics on S2 Surface: Arc-Length Parametrisation
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High School Spacetime: Understanding Warps, Limits & Potential Energy
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Graduate Does Non-Uniform Gravity Transform E into B Fields?
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Undergrad Length contraction vs expansion
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Undergrad On the invariant speed of light being the upper speed limit
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High School Can Magnetic Fields Control Gravity?
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Graduate Inertia & Accelerated Expansion: How Does Machian Explanations Fit In?
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Undergrad Geodesics and affine parameterisation
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Undergrad Gravitational Wave: Energy & Amplitude Changes
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Undergrad Differential Forms in GR: Higher Order Derivatives
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Graduate Color of Deep Space: Distribution of Light Wavelengths
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Undergrad Why is proper time undefined for spacelike/lightlike paths?
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High School Measuring c from Earth: Is the Speed of Light Affected?
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Undergrad Why don't general relativity and quantum physics agree?
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Undergrad Relativistic Effect on Attraction between Moving Masses?
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High School Why Contraction in Relativity Theory?
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Undergrad Can Time Be Frozen and Plotted in 3D Space?
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Undergrad Wave Equation & Wave Displacement Invariance: Modern Physics
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Undergrad Applicability of E and B field Transformations
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Undergrad What does Pt mean in this formula?
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Graduate Generalisation of Maxwell's equations
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Undergrad Discrepancy in Co-Moving Charges Magnetic Force?
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High School FTL Spin 1 Gauge Boson: Impact of Dark Matter Discovery
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Undergrad SR Doppler Effect: Differences in Wave VS Momentum Models
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Undergrad By what formula is this graph predicted? Cumulative Periastron Time Shift
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Undergrad Proper Distance Between Surfaces of Constant R in Curved Spacetime
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High School Flashlights and Guns inside an Event Horizon
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Undergrad Understand Michelson-Morley Experiment from Feynman Lectures
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High School Question concerning mass effect
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High School How Thin Can Speed Make Things? 2D Possibilities
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High School What Happens Inside the Event Horizon of a Black Hole?
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Undergrad Relativistic Explanation for the Unipolar Generator
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High School Relativistic Simulation of Charged Particles: How a Physicist Would Go About It
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Undergrad Is Symmetry on μ and α Valid for the Derivative of the Metric Tensor?
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