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 Feynman II, equation 26.11, off by a factor
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Graduate Alcubierre Drive Direction: How Does Craft Move?
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Undergrad Space Contraction: Does Moving Frame Affect Observation?
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Undergrad Contravariant first index, covariant on second, Vice versa?
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Undergrad Using Black Holes to Time Travel Into the Future
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High School Photons, mass, and black holes
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High School Does Light Phase Change During Travel?
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Undergrad Derivatives of EM Four-Potential: Euler-Lagrange to $\nabla \times B$
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Graduate Is Gravity a Gauge Theory? A Review of GR and Standard Model Symmetries
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Undergrad Derivation notation with capital D?
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Undergrad Sum Maxwell Lagrangian 1st Term: Use Minus Signs?
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Graduate Interpretation of covariant derivative of a vector field
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High School Curvature: Intrinsic vs. Extrinsic - What's the Difference?
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Undergrad Why do we need a theory to replace the Galilian composition of velocities?
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Graduate Euler-Lagrange Equations: EM Field Term
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Undergrad Measuring Space Curvature w/ Swarzschild Coordinate System: Q&A
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Undergrad Lorenz Transformation of Time: Explained
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Graduate SR/GRs Views on QM/QFT | Physics Forums
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Undergrad Relativistic Effect on Object Accelerated to 10000-10000m/s^2
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Undergrad Explaining Spacetime Dragging: Gravity, EM & Smooth Objects
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High School Curvature of space vs. curvature of spacetime
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Undergrad Deriving Divergence Formula in General Relativity
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Graduate Solving Schwarzschild Field Equations in this Form
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High School Inertial and gravitational mass
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Undergrad General Relativity & The Sun: Does it Revolve Around Earth?
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Undergrad Interstellar Travel Without Propulsion or Time Dilation
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Undergrad Is force/mass ratio an invariant quantity in GR?
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Undergrad Charged black hole - static electric field lines
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Undergrad Parabolic Motion from Hyperbolic Motion
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High School Can Electron-Positron Annihilation Reveal Insights About Black Hole Gravity?
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Undergrad Stress–energy pseudotensor of gravitation field for DE
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Graduate Difference Between Event Horizons & Trapped Surfaces - Explained Simply
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Undergrad Sanity Check: Four-Force & Variable Mass
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Graduate Improper and non-orthochronous group
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Undergrad Can I be taught general and special Relativity on this forum
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High School Light Clock Traveling in Z Direction
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High School How can Closed Timelike Curves be made?
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Graduate Interior Schwarzschild Metric: Pressure Dependence
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High School Another question about Gravity -- Does the apple attract the Earth?
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High School How exactly does gravity work?
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Undergrad Understanding Special & General Relativity: Inertial vs. Gravitational Frames
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Undergrad Black Holes and Charged Particles
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Graduate Gravitational Waves: Verification Accuracy & Physicists' Opinions
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High School Hockey Puck Paradox: Will Antman Fly or Cruise?
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Undergrad Confused About Lorentz Generators
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High School Increase in PE due to increased mass
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High School Einstein's curvature vs. Newton's
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Undergrad Relativistic Calculus Books & PDFs | Free Resources
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Graduate Why is Killing vector field normal to Killing horizon?
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High School I cannot grasp simultaneity in Special Relativity
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Undergrad Do Black Holes Have Walls That Define Their Structure?
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Graduate Strange Tetrad Form of Einstein-Hilbert Action
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Undergrad How much time dilation is there within a contracting remnant
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Undergrad Can a Gravitational 'Gun' Accelerate Objects?
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High School Addition of velocities at speeds near C - any differences?
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High School Gravitational Wave Communication System
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High School Speed of Light & Time Dilation: Travel Distance in 1 Sec?
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Undergrad Pseudotensors in different dimensions
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Undergrad Vectors in Minkowski Space & Parity: Checking the Effect
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Graduate Is There a Proper Way to Define Energy in General Relativity?
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Undergrad Relativistic Particles: Reaching Absolute Temperature?
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Undergrad What Makes Ohanian's Approach to General Relativity Unique?
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High School SR & GR: Circular Relationship?
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Graduate Variation of Scalar Field Action: Polchinski's AdS/CFT Review
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Undergrad Curvature and Schwarzschild metric
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Undergrad Energy-momentum formula and deBroglie wavelength
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Undergrad Measuring Speed of Light Relative to Earth
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High School Question about Gravity according to GR: Earth Rises, Time Axis Curves
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Undergrad Center of Mass Motion: Velocity & Momentum
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Undergrad Flash open manhole cover paradox
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Undergrad If a rock fell 20,000 meters to Earth Question
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Undergrad Why Is a Violation of Causality a Problem?
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High School Faster than Light and wormholes
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Graduate Is There a Relativistic Version of Hooke's Law for Materials?
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Undergrad Confirming Covariant Derivative in Hartle's Gravity
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Undergrad Separating Overlapping Event Horizons: Theory
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Undergrad Length Contraction & Mass Increase in GR | General Relativity
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High School Energy and Matter: General Relativity Explained
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Undergrad Can a Geometric Animation Help Visualize the Special Theory of Relativity?
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Graduate Difference Between Covariance and Diffeomorphism Invarience
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Undergrad 4-momentum of a massless particle
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Undergrad How to fill the stress energy tensor for multi body systems
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Undergrad Proving Effects of Stress-Energy Tensor on Curvature
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High School Special relativity equation question
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High School Black Hole Firewalls: Explaining to John K Clark
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High School Why Light Experienced a Doppler Shift?
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High School Black Holes: Rotating vs Non-Rotating
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Undergrad Can Spacetime Be Visualized in a 2D Universe Like Flatland?
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Undergrad Alcubierre Drive & Bending of Spacetime
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High School Gravity Production: Electrons, Atoms & Magnetic Fields
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High School Common Time: Explaining Einstein's Definition
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Undergrad Derivative of Lorentz factor and four-acceleration
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Undergrad Negative Mass and Hawking Radiation
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Undergrad Understanding Time Dilation and Velocity: Debunking Common Misconceptions
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High School Geodesic equation in Minkowski space clarification
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High School Can FTL Travel be Achieved With Mass of a Photon?
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High School I understand time a little better
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Undergrad Can Wormholes Be Stabilized Using Negative Energy Density?
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High School Solving Special Relativity Equation: Rail Car Thought Experiment
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Graduate Black Hole Orbit Inequality: Explained
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