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