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 Detecting matter falling into a Black Hole
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Graduate Why Does Gamma Apply to All Object Components?
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Graduate Radiation Far Zone Expansion - 65 Characters
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Graduate Lifespan of a black hole as measured by different observers
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Graduate Is General Relativity Incomplete? What Is It?
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Graduate Black hole electron: How can we drop the geodesic equation?
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Graduate Lorentz Transformation Equations, time transformation
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Graduate Palatini Formalism Derivations & Ideas: Holst Action
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Undergrad How Long Does a Photon Think It Takes to Travel from the Sun to Earth?
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Graduate Why Gravitational Waves are Decomposed in Spin Weighted Spherical Harmonics
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Graduate Rovelli Quantum Gravity: Clarification on Symplectic Forms & Hamiltonian
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Graduate Gravity Waves from Earth: Detecting from Orbit
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Graduate What is wrong in D.Y. Gezari's paper about speed of light?
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Graduate Cosmological Redshift: Calculating Wavelengths
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Graduate Relative Velocity in Lorentz Transform: Agree or Disagree?
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Graduate General Relativity and Quantum Cosmology
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Graduate Where do CTC's come from/ How do I interpret these tensors?
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Graduate Gravity & Force From Black Holes: How Do Photons Escape?
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Graduate Relativity Expert on Startalk Podcast: Interstellar & Near Light Travel
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Undergrad Gravity in General Relativity and Earth's Surface
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Graduate Sun's Shrinkage due to Gravity: Visualize the Impact
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Graduate Geodesic Deviation in 2D: Is There Directional Dependence?
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Graduate Does light receive a spacetime curvature upon refraction?
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Graduate Speed of Light is a Property of Massless Particles or Space?
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Graduate The Speed of Light: Is a Second is a Second is a Second?
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Graduate Have we derived the Gravitational constant via General Rel?
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Graduate Ans. Speed of Light: Clarifying Experiments & Processes
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Graduate Can we experimentally detect the weight of energy?
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Graduate Directional independence of motion in Lorentz Transformation
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Graduate Observing Objects Near Light Speed: Time Dilation or Reality?
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Graduate There is a didactic gap in the explanation of P.O.R
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Graduate Understanding Rindler Coordinates for Engineers
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Graduate Interpretation of the Michelson-Morley experiment
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Graduate E=mc^2, Gravitational Potential & Energy Balance
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Graduate How are space-like intervals important?
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Graduate Weight Loss Physics Before SR: How Was It Understood?
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Graduate Question about tensor notation convention as used in SR/GR
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Graduate How Does Gravity Affect Pressure and Curvature in Space?
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Graduate Mathematical relation between dipole moment and frequency?
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Graduate Relativity: Energy in AC Circuits & Mass Momentum
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Graduate Twin Paradox (again(again(again )))
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Graduate What Theories Explore the Deeper Meaning Behind the Constancy of c?
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Graduate Can You Travel Faster Than Light According to Physics?
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Graduate What is the relationship between spin connections and tetrads on a 2-sphere?
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Graduate Speed of Light Aboard a Spaceship: An Overview
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Graduate Is there any experimental evidence against preferred frame?
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Graduate Time dilation: speed relative to what?
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Graduate Does spacetime imply fatalism?
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Graduate Derivative of metric with respect to metric
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Graduate Parallel transport to explain motion of light near black hole?
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Graduate Lifetime of Universe: Limits & Expansion Explained
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Undergrad Space-Time Singularity: What, How, and Is It Possible?
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Undergrad How Do Black Holes Acquire More Mass Than Other Objects?
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Graduate Contravariant & Covariant Vectors: Electric Field Case
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Graduate Relativistic generalization of Larmor fomula?
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Graduate Equivalence principle and time dilation
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Graduate Affine parameterization of a light ray
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Graduate Schwarzschild vs vs Alcubierre & Time Dilation
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Undergrad How can (1/2)mv^2 and p^2/2m give different results?
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Graduate What is the physics behind GR's diffeomorphism invariance?
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Graduate Relativistic Kinetic Energy as a solution to a DE
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Graduate Plugging Godel Metric's Line Element into Software for Covariant Einstein Tensor
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Graduate Can time equal 0 in a Singularity?
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Graduate Energy Formulas in SR: Explained
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Graduate Trouble wrapping my head around GR
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Graduate Covariant Derivative - where does the minus sign come from?
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High School What is the Real Life Twin Paradox?
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Graduate Orthonormal Basis in General Relativity - Carroll
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Graduate Understanding General Relativity & Quantum Gravity
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Graduate Redshift in Terms of k | General Relativity
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Graduate Relativistic mass in Six Not-so-easy Pieces (Feynman)
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Graduate Gauge Formalism of Gravity: A-Z Guide
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Undergrad Are time machines possible? (serious)
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Graduate Yet another "never crosses the horizon" question
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Graduate The Significance of FRW Metric for Cosmological Redshift
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Graduate Help! EM Exam: Covariant LW Fields Derivation Questions
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Graduate What is the Relationship Between Time and Matter?
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Graduate Explaining Magnetism Using Special Relativity
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Graduate Spacetime: Is There Zero Separation for Charged Particles?
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Graduate Gravitational Collapse Calculations Problem Solved
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Graduate Length contraction test in electrical circuits
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Graduate Escape the Horizon: Can I Pull My Friend Back?
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Graduate What is the significance of hypervolume in quantum physics?
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Graduate Product of Tangent Vectors & Affine Parameter
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Graduate Dirac theory over gravitational constant reduction.
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Graduate Does Entering a Black Hole Speed Up Universal Aging?
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Undergrad Algebra Question: Where Does the 2 Come From?
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Graduate Schwarzschild Extension Coordinate Transformation Algebra
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Graduate Force in the Centre of a Black Hole: Explained
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Graduate Clarifying Black Hole Horizons: An Examination of Observer Perspectives
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Graduate Comoving/Proper distance, transverse comoving distance
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Undergrad Time Dilation on Earth: Why Hemisphere Matters
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Undergrad Light Travel After Big Bang: Baseball Universe Impact
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Graduate Tod & Hughston GR Intro: FRW Metric Derivation w/ R=6k or R=3k?
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Graduate Computing trajectories in Schwarzschild spacetime
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Graduate Curvature Singularity: Necessary & Sufficient Conditions
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Graduate Is it possible to stop time completely?
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Graduate Light Speed at 0.8c: Is My Understanding Correct?
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Graduate Stationary/ Static Conditions Metric?
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Graduate How does the curvature of spacetime affect space?
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