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.
I The energy of a closed universe is zero
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B Twins Paradox Thought Exp: What Happens When Reunited?
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I Ray tracing in the movie Interstellar
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B V=dx/dt (relative velocity between two inertial observers)
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I Recession Velocity near Cosmological Boundary: Hubble's Law?
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B How to relate relativistic kinetic energy and momentum
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I A bit confused with this question about the Penrose process
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I Can a Black Hole be Destroyed by Electron Beam?
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B Speed of light during acceleration
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I Is time really moving backwards?
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A Does gravitational time dilation imply spacetime curvature?
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A Induced Metric for Riemann Hypersurface in Euclidean Signature
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A Tensorial calculations - Best computational Language
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B Can We Create a Warp Drive for Light? - Josh's Curiousity
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A Deriving Acceleration in Gravity from E = mc^2
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I Time-Dependent Lagrangian Leads to Time Dilation?
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Insights The Gravity of Laser Light: How Does It Impact Acceleration?
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B Realistic Window View from a Starship: Gravity, Rotation, and Blue/Red Shifting
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B Misuse of Velocity Addition: Troubleshooting
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B Force between 2 Point Charges Across Frames
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B Spinning Black Hole Drags Space-Time: What Causes Friction?
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I Gravity Wave Propagation: Negative Energy Pulse?
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I Sun Disappearance: Impact on Earth's Path
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B Experimental evidence for effective mass increasing with speed
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I Co-rotating electric potential for KN solution
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I Hyperbolic Time Chamber: Is Time Dilation Theoretically Possible?
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B Measuring Time: Identifying Slower Clock w/ Two Identical Clocks
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B Newton's Constant in Higher Dim. Spacetimes, Velocity of Light=1
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B Question regarding the equivalence principle
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B Lense-Thirring Effect and Energy Loss
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I Understanding White Holes to Region III in GR
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A Transmission Line in Accelerating Frame: Energy Conservation Puzzle
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I Finding the angular momentum of a Kerr black hole
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B Is Proper Time Only Perceived by External Observers?
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I Integration trouble (integral over a 2-sphere)
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I Commutation between covariant derivative and metric
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I Refractive index of a medium in relativistic motion
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I Is the Surface of a Sphere Locally Flat?
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I Why do the two mouths of a wormhole have opposite charges?
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B Conflict Between Time Dilation and Red/Blue Shift?
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B Time Dilation Question: Two Men's Watches Differ after Space Travel
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I Metric Transformation b/w Inertial Frames: Analyzing Effects
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B SR vs GR - Visual Difference between Length Contraction
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I Observe Hawking Rad. in Black Hole?
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A Understanding Coordinate Transformation of a Tensorial Relation
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I Strange result from Bianchi identity, me spot the error
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I Alcubierre Warp Drive: Spacetime Diagram Explained
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B Definition of Spacetime Interval
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I Learning GR with Leonard Susskind: Prerequisites Needed?
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I Parallel transport general relativity
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I A problem with how the speed of light connects to special relativity
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A Conservation of energy for stationary particle attached to string
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A Gravitational Potential Energy & the Equivalence Principle
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A Eddington's Experiment: Sources for Calculations
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B Gravitational Waves: Comparing Effects on Earth
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I Light Deflection Formula: Impact Parameter & Angle Shift
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I LIGO & Special Relativity: Is Spacetime Distortion Real?
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I Relativity's Effect on Long Rod Shape and Speed
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B Fewer seconds or shorter seconds?
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A Help with 2nd Order Ricci: Indexes in GR
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I GR: Attractors & Liouville's Theorem
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I Definition of Tensor Identity Simplification
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B Gravitational Wave Background: The Mysteries of the Universe
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I The spacetime length of finite spacelike intervals
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B Analogies for Gravitational Attraction in Physics
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I Acceleration in special theory of relativity
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B Black Hole Energy Conversion - How Does It Work?
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I Time and Lorentz transformations
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B Could Universe Expansion Be Causing a Decay in the Speed of Light?
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I What is a "rotating worldline"?
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B Explaining Perihelion Shift of Mercury in GR Theory
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I How to work out the tetrads for given functions?
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B Why Aren’t ALL SR Effects Cumulative?
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B Time Dilation: Away or Toward Observer?
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A Differences between Actions in Curved Spacetime
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I New paper gravitomagnetism explains dark matter effects
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B Clocks Vanishing into Thin Air - Gravitational Time Dilation
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B Understanding Spacetime Diagrams | Basics Explained
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I Electric Field seen by an observer in motion
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I Lorentz transformations: 1+1 spacetime only
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I Observing Christmas Lights in a Black Hole: What You See
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B Is the Twins Paradox Equivalent to GPS Time Dilation?
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B Understanding Lorentz Transformations in Special Relativity
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B How does time dilation affect measurements of wheel rotation on a moving bus?
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Insights The Electric Field Seen by an Observer: A Relativistic Calculation with Tensors
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I Postulates of Special Relativity: Speed of Light in Inertial Frames
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I Diffeomorphism Invariance, Passive/Active Interpretations GR Insight
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A Einstein's Elevator Trajectories: Desloge & Philpott 1987, Hamilton 1978
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B Special Relativity & Einstein's Equivalence Principle
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I Thorne's error in explaining gravitational time dilation
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I Relativistic Energy & Robert M. Wald's General Relativity
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B Event Horizon: Non-Overlapping Radii Explored
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I An algebraic manipulation in Schutz's book on GR
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I Principle of relativity: active vs passive point of view
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B Does special relativity entail matter annihilation?
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I One more talk about the independence of Einstein's SR axioms
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I Alcubierre Drive & Gravitational Waves: Alien Effects?
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I Pole-Barn Paradox: Is My Understanding Correct?
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A Latest Warp Drive Research: Examining Chronology Protection Conjecture
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B Black Hole Observation: Outside Observer & Spherical Symmetry
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