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 Inertial frame of freely falling body
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Undergrad Understanding the Speed of Light in Ether: A Historical Perspective
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High School Calculate Proper Time for Two Events in Special Relativity
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Undergrad Wave Cuadrivector: Proving Four-Vector Invariance of Light Velocity
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Undergrad Musings, seeking opinions about the nature of time
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Undergrad A question about Alice and Bob in SR
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Graduate Is a volume element in relativity represented by a vector?
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Graduate Electromagnetism for Media in Arbitrary Motion
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Undergrad Interstellar Travel vs Universe Expansion: Is Andromeda Reachable?
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Undergrad Audio question about black hole
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Undergrad How Does Gravity Specifically Influence Mass?
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High School Gravitational Event Horizon: Two Interpretations
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High School Calculating Lorentz Factor with V=0
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Undergrad Relativity of Simultaneity: Observers Perceiving 3 Events
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Graduate Causal Structure of Metric Prop.: Matrix Size Differs
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Undergrad Coordinate transformations in GR
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High School Is Time Experienced by Photons at the Speed of Light?
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Undergrad Relativistic harmonic oscillator
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Undergrad Understanding Lorentz Transform Outputs
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Undergrad Relativistic speed of a rocket with constant thrust
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Undergrad How Does Special Relativity Challenge Our Understanding of Absolute Time?
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Undergrad Why Does Energy Have Mass in Quantum Field Theory?
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Undergrad GPS relativity error - really?
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Graduate What is the Relativity of Wrong?
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High School Energy & Momentum of Spacetime w/o Mass
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Undergrad Cylindrical Microwave Cavity Resonator: Speed of Light Dependency?
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High School Deriving Lorentz Factor: An Analysis of Jimmy360's Method
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High School Using SR & Curved Coordinates for Time Calculation
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High School Can the Lorentz Factor Approach 0i as v Exceeds c for FTL Reference Frames?
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High School Difference Between Proper Time and Coordinate Time Explained
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Undergrad Gravity's Degrees of Freedom: Explored
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Graduate Unpacking Entropy Bounds and Their Violations
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High School Relativistic Kinetic Energy: Does Mass Change?
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Undergrad A question about invariant mass
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Graduate Graviton Model: Can We Describe It Mathematically?
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High School Can Tachyons Challenge Our Understanding of Physics?
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High School Proper Time Change: Helium 4 Superfluid Effects
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Graduate Derivation of Einstein Field Equations w/o Poisson or Least Action
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Graduate How to calculate the Riemann curvature at r=2GM?
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High School Does a Black Hole with Lower Density Than Water Float or Sink?
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High School Second Postulate of Special Relativity Explained
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High School MinutePhysics Special Relativity Series
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High School New Paradox: Gamma Light & Relativistic Doppler Effect
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Undergrad Traveling at Light Speed: Is a Photon Stationary?
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Undergrad Simultaneity and the Twin Paradox
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Graduate Reporting my own post to bring this to the attention of a moderator.
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Graduate Explore Potential Energy, Pressure & Newtonian Gravity
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High School Is Lorentz Contraction Bona Fide or Just A "Perspective"?
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High School Simulation of a neutron star's impact on a supermassive black hole?
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High School What are the implications of a 24-light-hour tower at the Earth's equator?
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Undergrad Alcubierre Metric: Explaining Dark Matter Halo Speed
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Undergrad EoM via varying action - covariant derivative when integrate
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Undergrad Relative Simultaneity: Flashlight in Moving Ship
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Graduate Topology of Black Holes: Decomposing the Manifold and the Role of Knots
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Graduate Problem with a basic theorem in Wald's GR book
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High School Is There a Formula for Gm/r in Gravitational Potential?
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High School Ideas for Teaching Relativity to High School Kids
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Undergrad Metric Compatibility: Is It Forbidden?
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Undergrad Can Gravitational Waves Explain Uniform Space Expansion in the Universe?
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Undergrad Satellite Orbit synchronization
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Undergrad Is E=mc^2 Explained Correctly?
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Undergrad Effect of Relativity on Laser Sail Acceleration
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High School Mass-Energy Equivalence: Matter as Potential Energy?
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Graduate Calculating Christoffel Symbol with Rotating Metric
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Undergrad What is the Term for ds in Spacetime Interval Equation?
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Undergrad Lorentz Group: Tensor Representation Explained
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High School Observational Effects of "FTL" spotlight from laser pointer?
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Undergrad Relativistic formula for motion with constant acceleration
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Undergrad What I understand about Time Dilation
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Graduate Given a Metric, find the constants of motion
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High School Understanding Minkowski: Einstein, Relativity & Absolute Simultaneity
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Undergrad Force on Moving Charge: Lorentz Transformation & Point Charge
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Undergrad Deriving Maxwell's Equations from Field Tensor (Griffith 4ed)
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Undergrad Can Wormholes Be Created Without Exotic Particles?
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Undergrad Reconciling two observers in two frames
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Undergrad Covariant Derivative Equivalence: Exploring an Intriguing Result
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Undergrad Extreme Length Contraction: Classical to Quantum?
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High School Why is the speed of light a constant?
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Graduate Rods, Clocks & Free Fall: Metric & Connections in GR
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Graduate What are the possible radii for free falling motion in a rocket trip?
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High School Speed of Light Slowed for SuperBig Observer?
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Undergrad Gravity & Time: Is it Possible?
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Graduate The Metric Matrix: How Can I Invert a Non-Diagonal Matrix?
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High School Motion vs Time: Does Time Affect Motion?
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High School Universe's Flatness: Mass, Gravity, Dark Energy Explained
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Graduate On metric and connection independence
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Undergrad Can We Choose a Coordinate System for a Levi-Civita Connection on Manifolds?
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High School How can any physical body truly be at rest?
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Graduate Discuss Open Problems in Gravity & Cosmology | Join the Conversation
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Undergrad Solving Tensor Calculus Question from Schutz Intro to GR
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Undergrad Will a spring extend more when going at relativistic speeds?
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High School Fresnel's Formula & Ether Drag: Resnick Book Confusion
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High School Can Anything Go Through a Black Hole?
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Undergrad Comparing tensors at different points
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Undergrad Does infinite one-way speed of light violate p conservation?
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Undergrad Measuring 1-Way Speed of Light: 15m Fibers & 1GHz Pulse Generator
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High School Why Albert Einstein's Original Concept for a Black Hole?
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Undergrad Can Black Holes Transport Mass Back in Time?
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Undergrad Nearly Lorentz Coordinate System Explained
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High School Understanding the Meaning of "Proper Time"
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