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 Understanding the Doppler Effect: Formula and Examples for Light Waves
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Graduate Twins Paradox: Nature Cheats but B Gets Fooled
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Graduate Doubt in Relativity of Simultaneity
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Graduate Torsion Scalar and Symmetries of Torsion Tensor
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High School Time Travel - Does It Create a New Dimension?
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High School Smallest Schwarzschild Radius: Theory & Facts
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Graduate What Are the Differences Between Space-like and Time-like Events in Spacetime?
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Graduate Why do diffeomorphic manifolds have physically identical properties?
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Graduate Why does imaginary time behave like space?
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Graduate Space-intervals, proper time, and proper distance
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Graduate Measuring distance, speed and clock
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Graduate Solving Exercise 13.7 MTW Using Light Signals
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Graduate Special Relativity Train Scenario
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Graduate Measuring Speed with Doppler Effect: Questions and Challenges
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Graduate Doppler Effect in Relativity: Mirror vs Lamp
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Graduate Is There a Connection Between the Higgs Field and Relativity's Time Distortion?
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Graduate Stationary/extremal L for timelike/null/spacelike geodesics
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Graduate Simultaneity of Events: Understanding Observer Perspectives on Time
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Graduate Consequences of space-/time-/light-like separations
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High School Speed of Light, Rapidity & Cantor's Infinities
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Graduate Generic Soliton Solution Periodicity: Restrictions & Examples
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Graduate D'Alembert operator is commute covariant derivative?
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Graduate Time: Travelling Twins vs Black Hole Gravity
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Undergrad Particles with mass can't reach speed of light?
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Graduate Coincidence of spacetime events & frame independence
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Graduate Normal Vector for Null Surfaces: How to Define and Fix it Completely?
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Graduate Proving Maxwell's Equations are Lorentz Invariant
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Graduate Speed of Light - Questions & Answers
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Graduate Athlete Holding a 20m Pole in a 10m House
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Graduate How Does Time Dilation Affect Hawking Radiation Emission Near Black Holes?
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Graduate Measuring One-Way Speed of Light
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Graduate Spacetime Curvature: Does It Affect Objects?
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Graduate Force Transform Applying: Question on a Specific Case
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Graduate Let's Sort Out This Gravity Thing - c And All That
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Graduate Is All Motion Relative to Feynman's Path Integral?
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Graduate Hamiltonian of General Relativity
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Graduate New MINOS measurement of neutrinos speed through earth
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Graduate How to determine which clock runs slower in relativity?
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Undergrad Effects of Velocity Aberration?
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Undergrad Speed of Light: Does Intensity & Frequency Affect It?
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Graduate Is speed of light in vacuum an axiom in relativity?
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Graduate Special Relativity: Astronaut & Earth Light Speed Paradox
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Graduate Metric Tensor of a line element
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Graduate Deriving the Definition of the Christoffel Symbols
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Graduate Time Travel & Gravitational Time Dilation Function
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Graduate Is Poincaré's Space Dilemma the Key to Understanding Gravity?
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Graduate Gravity Forces Us to Move: PF Forum
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Graduate "Semi" Synchronous coordinates
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Graduate Is there measureable spacetime distortion from EM fields
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Graduate How should I think about null geodesics?
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Graduate Apparent horizon for the eternally accelerated observer
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Graduate Schutz page 294 (Deflection of light)
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Graduate Electric Field in Gravitational Shockwave Geometry?
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Undergrad What is the smallest practical unit of time?
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Graduate What is the difference between locality and causality?
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Graduate Understanding the Laws of Physics in SR: Questions & Answers
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Graduate Write Torsion Tensor: Definition, Metric Tensor & Equation
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Graduate Age of Universe for High Velocity Planet?
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Undergrad Can Space Aircraft Reach Speed of Light in Vacuum?
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Graduate Bending space and space time - what is the difference?
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Graduate What is the cause of time dilation in Special Relativity?
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Graduate What info do I get from these tensors?
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Undergrad What exactly is a hypersurface?
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Graduate Einstein-Cartan Field Equations Derivation
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Undergrad What is the 4th Dimension - 3D World + Time or 4 Axis?
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Undergrad Basis Vector in GR: Cartesian Plane Comparisons
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Graduate Penrose Diagrams: How to Create with Known Spacetime Metric
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Graduate Is time a vector? if it is, what is its direction?
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Graduate Is Λa_b the Same as Λba in Tensor Notation?
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Graduate Are Newton's Laws Still Valid Near Black Hole Orbits?
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Graduate Implications of the tensorial form of the EFE
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Undergrad Scalar Product of Orthonormal Basis: Equal to 1?
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Graduate Reconciling Constant Speed of Light & Relativity
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High School How many times did the machine actually travel around the Earth?
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Graduate Space-Time Relativity: Finite Time & Measuring Time
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Graduate What is the definition of Locality (in QFT)
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Graduate Time Dilation with a Tennis Ball
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Graduate How Does Time Dilation Affect the Forces Between Fast-Moving Objects?
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Graduate Generalized velocity addition and aberration formulas
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Graduate Simultaneous events, space-like separation & QFT
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Graduate Equations of motion for an observer falling radially into a blackhole
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Graduate Orthonormal Basis: Definition & Scalar Product in GR
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Graduate Doppler Effect & Time Dilation: Explained
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Graduate On the one way speed of light....
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Graduate Energy conservation and wormholes
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Graduate 2 simple special relativity thought experiments
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Undergrad What if the Halo Ring from "Halo" turned into a blackhole?
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Graduate Energy Tensor & Field Equation | Einstein Theory
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Graduate Quantized Kinetic Energy of Relativistic Objects
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Graduate Difference between Co-variant and Contra-variant vectors?
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Graduate Frame of Reference Dependant Mass & the Resulting Conflicts
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Graduate Basic doubt of special relativity
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Undergrad Time Dilation & Mass: Does 2x Mass Mean 2x Slower Time?
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Graduate An observation about relativistic space travel....
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Graduate Material Behavior at the Event Horizon
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Graduate The sign of the cosmological term
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Graduate Nature of Geodesic: Determine Without Knowing Metric?
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Graduate Fall into Space-Time's Minimum Point
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Undergrad Can the Rest Mass of an Object Change Over Time?
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Graduate Understanding the Relativity of Simultaneity in Special Relativity
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