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.
B Finding the length of a metre stick from a moving frame of reference
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I Visualizing Intrinsic Curvature: Is This a Good Practise?
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I Bernard Schutz Proves Invariance of Interval
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I What Makes Closed Timelike Curves Physically Possible in Godel Universes?
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B Is Time a Real and Material Concept?
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B Deriving Lorentz Transformation: Wave Eq Invariance & General Relativity
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B Possibility of Black Hole research
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I Extracting Info from a Black Hole: Robert's Hypothetical Process
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B Time Dilation & Relative Motion: Who Measures Proper Time?
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A Critique of Non-Interaction Theorem: Meaning & Validity
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I Is this a closed spacelike curve?
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B Finding Flaws in General Relativity: A Question of Knowledge
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I Metric Nomenclature: Lorentz & Minkowski
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I What is the physical cause behind time dilation?
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Synchrotron Radiation: Charge Loss of Relativistic Particles in Magnetic Fields
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B Confusion over relative velocities and reference frames
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I Does G effectively change in an expanding metric?
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B Simultaneity & Non-Invariant Variables: Is the Speed of Light Necessary?
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A Does anyone know asymmetric dynamic global solutions to Einstein eqs?
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B Traveling backwards through time: clarification please
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I How can the stress tensor be non-zero where there is no matter?
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B Beginner Resources for Special & General Relativity
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I Calculate Time & Distance Dilations: 50k Years & 1 Day
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A Black Hole Eating Gravitational Waves - A Look at Physics
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B Questions about Einstein and the Block Universe
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B Matter & Spacetime: How Tightly Coupled Are They?
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I Exact Stationary Spacetimes: Complete List of Discovered Solutions
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I Realistic Time Dilation for Objects > Subatomic Particles
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I Is Special Relativity Creating a Paradox in Our Understanding of Time and Space?
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I Faster Than Light Particle: Could it Create the Universe?
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B Speed of Light: Michelson-Morley Experiment Revisited
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I Observers A & B: Rest & Simultaneity
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I Usefulness of Diagrams for Relativity: 1-5
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I Spacetime Geodesics at Sea Level & Zoomed Out
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I Relativistic centrifugal force
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B Gravitational Effects on Aging
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I Velocity Addition: Angled Motion Explained
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B Does Dark Energy Explain the Expansion of Space in Relativity?
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I Unknown velocity vector of a rail carraige
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A Inquiry on Matrix Tensor Notation & Meaning in Curved Spacetime
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I Proper vs. coordinate acceleration
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I Hubble's Law and Star Velocity
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A Derive 4-Velocity Components: Anyone Know How?
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I Deriving tensor transformation laws
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I How Does Time Dilation Affect Space Travel Duration?
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B Attribution of Reference Frame: A Dilettante's Question
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I Derivation of the Lorentz transformations
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A Understanding gravitational waves (GR)
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A Solve for "conv" in ##x^0=t=ct_{conv}##
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I Explore Clock Synchronisation in a Moving Train Frame
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B Confirm General Relativity: Eddington's Starlight Experiment
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B Why is E=MC2 Squared and not Cubed?
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B Why Does Proper Time in Lorentz Geometry Use t²-x² Instead of t²+x²?
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I Why 3-momenta + lorentz invariance = large energy?
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B Black Holes & Warp Bubbles - Event Horizon Considerations
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B Doppler Effect: Light Blueshifted When Source Moving Towards Observer
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I Gravitational Mass of a Ball of Photons: Concept Q10.4 in Gen Relativity
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B Spacetime Curve: Mass Effects & 5th Dimension
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I Photon Absorption & Electrons: Mass, Energy & Releasing Photons
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I Is the Alcubierre Warp Drive possible?
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I Accelerator Particles: Speed of Light & Mass Increase
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B Relativity: Twin Paradox - Is Age Determinable?
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B Curve Space-time from Spinning disc?
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I Deciphering the Units of Continuity Equation in GR
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B Applicability of GR in Tidal Gravity Problems?
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I Universe Expansion: Does Speed of Motion Matter?
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I Is Space-Time Continuous or Quantized?
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A Semicolon notation in component of covariant derivative
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B Is Time Really Flowing in Relativity?
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A Solve E=mc2 Condundrum: Views on Logic & Reasoning
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Insights The Einstein Field Equation in a Static, Spherically Symmetric Spacetime
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B Is Mach's Principle the Key to Understanding Rotatory Motion?
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A How Do You Derive the Riemann Component?
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A Hawking Radiation Inside a Black Hole: Theory & Possibilities
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I Adding Extra Dimension for Calculations in Curved Spaces
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B Is There Evidence of Physical Matter Existing Beyond the Present Moment?
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A Reimann Tensor Component Form: Charles&Wheeler
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B Is the case for a Universal Speed Limit experimental or theoretical?
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B Black Holes, Gravitational Waves & Gravitons Explained
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B Length contraction of a pair of electrons
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I Approximating a Black Hole Merger Using a Schwarzschild Model
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I Binding Mass Distribution in Gravitating Bodies
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B How GR Predicts Earth's Orbit Around Sun: Geodesic Path & Curvature
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A Gravity on Planets: Does Mass Affect Free Fall?
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I Inverse results in special relativity
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I What is the experience of a photon?
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I Solving the HUGE Issue with Lorentz Transformations and Lightning Strikes
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I General Lorentz Transformation Explained: Visualize and Grasp It!
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I Two Observers Moving Opposite Dir Rel to Each Other
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I The Singularity and the Schwarzschild radius
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I Why Are Coordinates in General Relativity Independent?
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B Professional debates about Spacetime
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B Total % of Photons Redshifted While Moving Away From a Black Hole?
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I Length contraction viewed with Heaviside equations
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I Why Is the Green Observer Always the Bent One in the Twin Paradox?
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I Do ##\vec E## and ##\vec B## change in a moving frame?
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B Measuring Fictitious Forces in a Closed Box
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I Spacetime and Events in (x,y,z,t)
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B Inertial & Gravitational Mass: When Do They Differ?
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I Electromagnetic Fields and the manipulation of Space-Time
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