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.
Graduate When is the momenergy vector invariant?
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Graduate Solving the Shorter Distance Puzzle with Spacetime
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Undergrad Can Gravity Cause an Object to Pull Itself Inward?
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Graduate When Will B2 Be Received by A?
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Graduate Interpretation of double bending / deflection
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Graduate Calculate Christoffel Symbol: Textbook Guide
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Undergrad Lorentz Transformation negative result
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Graduate Time Unit Vector: Calculate d'Alembert with 4 Vectors
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Graduate Normalization of Four velocity
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Graduate Why Stick to GR? A Closer Look at the Theory's Successes and Predictions
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Graduate Can I stick my arm in past the event horizon?
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Graduate Time Dilation Confusion: Need Help Understanding
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Graduate Flatness Problem: Unstable Ω-1 Parameter in Dark Energy Dominated Universe?
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Graduate Novel Geometrical Models of Relativistic Stars: A Physical Analysis
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Graduate What is the Principle of General Covariance in Physics?
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Graduate Magnetic Force from Current Loops: Relativistic Treatment
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Graduate Geometry in General Relativity: Round Marble on a Box
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Graduate Is the Neo-Lorentzian Framework Gaining Acceptance in Modern Physics?
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Undergrad Relative momentum and relative mass
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Graduate Reversing Indices in Contractions: Can it be Done?
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Graduate Measuring Relative Speed of Frames Using Spacetime Interval
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Graduate Approaching Light Speed: Why Would It Fail?
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High School Earth vs Space: Is a Falling Ball PULL or PUSH?
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Graduate How Does Tetrad Formalism Relate to the Hilbert-Einstein Action?
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Graduate Does the Twin Paradox Break Symmetry in the Zig-Zag Scenario?
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Graduate How Does Spacetime Curvature Affect Light's Movement and Dynamics?
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Graduate Muon length contraction confusion
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Graduate Distinction between coordinate and reference frame
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Graduate Baez's vizualisation of Ricci tensor
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Undergrad Discover the Relationship Between E=mc2 and Time with m=1kg and d=1m
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Graduate Calculating Ship Time w/ Varying Acceleration in Relativity
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Graduate Metric for a free falling observer
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Graduate GR Controversy: Proven Phenomena but Unproven Theory?
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Graduate Equivalence Principle: Einstein vs Strong
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Graduate Covariant form of Newton's law of gravity
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Graduate Observed speed of light shone back from 0.9c forward motion
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Graduate Frequency shifts in rotating frames
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Graduate Invariant mass of a photon changes - from Wiki
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Graduate Understanding Einstein Field equations?
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Graduate Big Bang & Angular Momentum Conservation
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Undergrad Time Dilation: 1 Hour=77 Hours - Can I Phone?
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Graduate Is curvature possible for a 2D metric?
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Graduate Unravelling the Mystery of Gravity's Speed & Bend
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Graduate Is Net Charge Conserved in Special Relativity with Current Flowing in a Wire?
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Graduate Thin Shell Cavity in General Relativity
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Graduate Spacetime Curvature: Which Tensor Gives Coordinates?
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Graduate Twin Paradox and Time Asymmetry in Special Relativity
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Graduate Is the Sagnac Effect Misleading in Understanding Length Contraction?
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Graduate Light at speeds faster than the speed of light?
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Graduate Tests of EFE: Assessing General Relativity's Validity Beyond Cosmology
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Graduate Why c Speed Limit Doesn't Prove Space is Continuous?
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Graduate What will be the rate of fuel consumption of a rocket near 'c'
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Graduate Terrell Revisited: The Invisibility of the Lorentz Contraction
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Graduate Can Relativistic Propulsion Take Us Beyond Our Solar System?
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Graduate Twin Paradox - Question on Space Time Diagram Analysis Resolution
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Graduate Find G_{\mu\nu} from Supergravity Lagrangian: Chapter 4, Section 4.3.2
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Graduate What is the value of curvature which caused by earth
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Graduate Is the Lorentz Factor Symmetry Key to Unlocking a 125-Year Mystery?
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High School Speed of Light Near Black Holes: Explained
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Graduate Mass velocity at a black hole event horizon.
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Graduate What are the non-zero Christoffel symbols for 2D polar coordinates?
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Graduate What are these Gaussian coordinates?
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Graduate Understanding Light Beam Emissions and SR's Light Clock
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Graduate Clock synchronization and relativity of simultaneity
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Graduate Grabbing Hands at Speed of Light: What Happens?
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Graduate Time Misured by Clock in Non Inertial Sistem?
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Undergrad The Minimum Speed in the Universe: An Exploration of the Cosmic Limit
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Graduate Are photon energies constant for any observers?
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Graduate Viewing Miller's Planet from Earth Time: Time Dilation Mystery
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Graduate What Do Lance Warriors See When Stabbing Each Other?
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Undergrad Some Interesting Problems (Reference Frame)
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Graduate Simplifying Tensor Equations for Beginners
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Graduate Does Hoyle C field violate conservation of energy-momentum?
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Undergrad Explore Relativistic Effects in "A Slower Speed of Light" Game by MIT Game Lab
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Graduate Is Hawking Radiation a Kinematic Effect or a Real Phenomenon?
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Graduate Deriving Einstein Tensor & Inverse for Gϴdel Metric in Cartesian Coordinates
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Graduate What breaks the symmetry in the twin paradox?
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Graduate Schwarzschild, Singularity, Density
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Graduate Charge's Frame: Electric Field of Moving Charge
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Graduate Cosmological constant term and metric tensor
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Graduate Understanding the Classical Euclidean Action in Quantum Field Theory
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Graduate Why is the fabric of space and time always portrayed flat?
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Graduate Problem Perceiving Simultaneity (Special Relativity)
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Graduate Relativistic centripetal force is a byproduct of time
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Graduate Unit Error in Oppenheimer-Snyder 1939 Paper?
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Graduate Deriving geodesic equation from energy-momentum conservation
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Graduate Gravitational Time Dilation at Event Horizon
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Graduate Wikipedia article: No time in General Relativity
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Graduate Does GR reduce gravitational force on a planet's surface?
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High School What causes magnetic repulsion and attraction?
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Graduate Do Photons Experience Time Dilation and Redshift?
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Graduate De Sitter Vacuum: Is it the Only Positive CC Solution?
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Graduate What is the Meaning of r in Schwartzschild Metric?
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Graduate Interactive Minkowski diagrams tool
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Undergrad Minimum energy to accelerate a mass?
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Graduate Time Dilation happens on moving frame - but which one?
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Graduate Do Moving Observers See Simultaneous Flashes from Stationary Light Sources?
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Graduate Is Photon Mass a Reality Despite Its Momentum and Energy?
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Graduate Trouble understanding 2-side BH Penrose diagram
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Graduate Frame dragging slowly rotating shell
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