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 General Relativity as a Theory of Gravity Explained
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High School Question about Curvature caused by Mass
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High School Is this an incorrect treatment of SR? Oblique coordinates....
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High School Local/Proper Time of EM Waves: Explained
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High School Frame dragging and co-rotating shells
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High School Equation for Relativistic Exhaust Velocity (Ve): Help Needed
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High School Mechanism of Curvature of Space: Does it Happen Instantly?
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Undergrad Investigating a Possible Derivation Error in f(R) Gravity Field Equation
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Undergrad Is the speed of light constant?
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Undergrad Self-Study GR: Construct Contravarient/Covarient Orthogonal Basis
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Insights The Revival of Newton-Cartan Theory - Comments
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Undergrad Special Relativity Course at World Science University by Brian Greene
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Undergrad Is the FLRW Metric the Only Form for One-Dimensional Maximally Symmetric Spaces?
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High School Is the speed of light a degree of freedom?
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High School Send Information Faster than Light: Point A to B
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Graduate Deriving Equations of Motion in GR
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Graduate Usage of kinetic energy in proof for E=mc^2
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Undergrad Four-vector Dipole Moment: Electric & Magnetic
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Undergrad Spacetime moving faster than speed of light?
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Undergrad Mass/energy in general relativity
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Undergrad A _perfectly_ symmetric twin paradox cases
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Undergrad Relativistic Rocket: Understanding Behavior & Speed Limit
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High School Question about time and particle interactions
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Undergrad 6-dimensional representation of Lorentz group
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Undergrad Deriving Schwarzschild Interior Boundary Conditions
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Undergrad Simultaneity hyperplanes "curved" while stationary?
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Undergrad Parallel transport vs Fermi Transport
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Undergrad Calculating Perturbative Expansion of Metric Inverse in Cosmology
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Undergrad Does ##x_\mu x^\mu## Equal ##(x_\mu)^2## in Einstein Notation?
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High School Time is neither matter nor energy then why it is influenced by Gravity?
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High School Special relativity implies the space cannot be "closed"?
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Undergrad Why Schwarzschild Metric for Deflection of Light & Precession of Perihelia?
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High School How to travel back in time according to General Relativity?
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High School Does Consciousness Create Time in a Timeless Space?
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Graduate Why Orbital Time is 6πGM in Schwarzschild Geometry
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High School Velocity-Composition Law w/ c=1: Deriving the Formula
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Undergrad Metric transformation under coordinate transformation
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Undergrad What is the nature of the force causing deviation from a circular orbit in GR?
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High School Light Beams Attraction: e=mc^2 & Asymmetry
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Graduate Conserving Quantity in Schwarzschild Metric
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Undergrad Uniting Quantum Mechanics & General Relativity: 3 Forces & Geometry
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Undergrad Meaning of Constants of Motion in General Relativity
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Undergrad Getting to Grips with Rank-2 Tensors
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High School Temperature & Relativity: Can Plasma Fusion Test Limits?
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High School Event in SR: Explained w/ Example for Better Understanding
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High School Special relativity; mixed up time and space due to motion
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High School Some questions about light and relativity
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High School Relativity’s Effect on Consciousness
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High School Gravity: Force or Distortion of Spacetime?
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Undergrad Is Time Reversal Symmetry Truly Fundamental?
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Undergrad Deriving Schwarzschild Solution: Easier Strategies?
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High School Rindler - uniform acceleration
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Undergrad Rod Near Event Horizon: What Would Happen?
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High School Black Hole Gravitational Lens: Bending Light & Mass
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Undergrad Assumption that the rest mass energy is mc^2
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Graduate ##2+1##-D Einstein gravity is topological and only non-trivial locally
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Undergrad Derivation of length contraction
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High School C as Energy Conversion Constant: Conservation Law Explained
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Graduate Cosmological constant in the semiclassical limit of quantum gravity
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High School Einstein's Epiphany of Constant Light Speed
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Undergrad Metric Tensor as Simplest Math Object for Describing Space
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High School Is General Relativity Incomplete Without Dark Matter and Dark Energy?
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Undergrad Gravitation vs Curvilinear Coordinates: Analysis of Weinberg's Book
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Undergrad What is the hyper-cylindrical line element?
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High School Negative potential energy and negative mass
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Undergrad Time Dilation, Clocks, & Gravity
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Graduate Boundary conditions on the Euclidean Schwarzschild black hole
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Graduate How to obtain components of the metric tensor?
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Undergrad Calibration of Minkowski Diagram: Explaining Invariance of S^2
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Undergrad Time as a Dimension: Exploring Galilean and Lorentz Transformation
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Undergrad Lorentz transformation validity
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High School In a cyclotron, the time to make it all the way around is Different
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Graduate Brain Overload: Comparing Proper Time, Ephemeris Time & Coordinate Time
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High School Understanding Black Hole Equations Conceptually
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High School How Can You Create a Physics-Based Video Game to Teach Relativity?
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Undergrad Time Dilation: One Year in Jupiter = How Many Years on Earth?
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Graduate Evaluate Covariant Derivative on Tensors
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High School Can Photons be in a Stable Orbit? GR Analysis
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Undergrad How do the Lorenz equations for time account for the movement of Alpha Centauri?
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Undergrad Variation of perfect fluid and Lie derivative
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Undergrad Static, Isotropic Metric: Dependence on x & dx
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High School Gravitational Waves: Mass Interaction Questions Answered
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Undergrad Square of the difference of four-vectors
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Undergrad Rest Energy in special relativity
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High School Black Hole Tensile Strength: What Happens at Planck's Length?
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Graduate EoM in Schwarzschild geometry: geodesic v Hamilton formalism
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Undergrad How is Simultaneity Defined in Spacetime Diagrams by A.P. French?
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High School Shape of Universe & Cosmological Principle
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Undergrad Area of the event horizon of a rotating black hole
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Undergrad Event and Cauchy horizons for a charged black hole
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Undergrad Is the Principle of Relativity different for different theories?
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Undergrad Can Born Rigid Motions Occur in Curved Spacetime?
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Graduate Two questions on the Stress-Energy Tensor
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Graduate Understanding the Relativistic Action for a Point Particle
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High School Why is interstellar travel so hopelessly difficult?
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Undergrad One way speed of light experiment proposal
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High School Conservation of Newtonian Force and the Invariance of Maxwell's Equations
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Undergrad Dimensionless coupling constant of gravity
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Undergrad Electromagnetism and relativity
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High School Muon Time Dilation: Earth vs Muon Perspective
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