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 Do electrons radiate when in free fall?
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Undergrad Velocity of Particle vs Inertial Frame Velocity
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Undergrad What is the role of the longitudinal rapidity in relativistic contexts?
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Undergrad The Definition of Redshift for Photons
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Undergrad Solving Lorentz Contraction Question: What went Wrong?
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Undergrad Is Mathpages the Best Resource for Understanding GR?
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Undergrad Einstein's unidimensional elevator and Rindler coordinates
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Undergrad Easiest possible way to derive the Lorentz transformation
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Undergrad Is Velocity Through Spacetime Always Equal to 'c'?
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Undergrad Space & Time Axes Coinciding: Consequences Explored
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Undergrad A variation of the twin paradox
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Undergrad Understand Twin Paradox, Leading Clocks Lag & Doppler Effect
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Undergrad Twin Paradox: Travel at Fractional Speed & Instantly Return ##v##
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Undergrad Lorentz Symmetry at Black Hole Event Horizon
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Undergrad Relativistic Simultaneity: A Thought Experiment
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Undergrad Index placement -- Lorentz transformation matrix
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Undergrad Einstein's Equivalence Principle: Freely Falling Local Frames
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Undergrad Coordinates for diagonal metric tensors
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Undergrad Gravity Propagation: How Does Time Affect Orbital Modeling?
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Undergrad Mass/Density Increase in Motion: Relativistic or Observable?
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Undergrad Energy stored in space-time or space?
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Undergrad What is the mechanism by which energy/stress curves spacetime
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Undergrad What Happens to Objects When the Higgs Field is Negated?
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Undergrad The light from Mercury, the Sun's corona and gravity
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Undergrad Uniform gravity's space-time curvature
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Undergrad Constancy of the speed of light
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Undergrad Detecting Gravitational Waves & Alcubierre Drive
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Undergrad GR in Milky Way: Approximating an Inertial Ref Frame?
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Undergrad Time Dilation: A & B's Age Difference
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Undergrad Would Relativistic Effects Exist Without an Ultimate Speed?
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Undergrad The Potential: Harnessing Energy to Create Mass and Possibly Universes
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Undergrad Do black holes accumulate neutrinos?
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Undergrad Does an Electron's Field Expand at c Upon Spontaneous Creation?
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Undergrad Number of Solutions of Einstein Field Equations w/ Zero Pressure
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Undergrad How does the speed of light affect clocks?
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Undergrad How does the motion of colliding billiard balls change under Special Relativity?
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Undergrad Calculating Velocity: Moon Around Earth & Clocks in Burj Khalifa
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Undergrad Hash marks on minkowski diagram
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Undergrad Derivation of Rindler Metric and How It Resolves the Twin Paradox
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Undergrad Does the Invariance of Proper Time Lead to the Lorentz Transformation?
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Undergrad Is There a Preferred Direction in Time?
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Undergrad Non-inertial reference frames question
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Undergrad SR Light Wavelength & Direction: Questions Explained
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Undergrad Time Dilation Explained: Feynman Lectures 15-4
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Undergrad How certain are we about black hole mass density?
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Undergrad Question about length contraction
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Undergrad Understanding Black Hole Entropy: Consistency Across Reference Frames
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Undergrad Why did Einstein considered it “evident”?
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Undergrad Does a Photon Carry Velocity of Its Source?
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Undergrad Symmetry Group Freedom: Choosing How Groups Act on Coordinates
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Undergrad Length Expansion Opposite Direction: SR Simultaneity Explained
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Undergrad Relative Simultaneity: Free Resources to Help You Understand
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Undergrad Massless Electron Compton Scattering: Energy of Outgoing Photon
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Undergrad Which Calculation Is Correct for Meteor Evasion Time in Spacetime Physics?
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Undergrad Why do we need to modify GR with theories like F(R) ?
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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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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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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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Undergrad Relativity of Simultaneity: Observers Perceiving 3 Events
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Undergrad Coordinate transformations in GR
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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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Undergrad Cylindrical Microwave Cavity Resonator: Speed of Light Dependency?
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Undergrad Gravity's Degrees of Freedom: Explored
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Undergrad A question about invariant mass
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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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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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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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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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Undergrad Relativistic formula for motion with constant acceleration
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Undergrad What I understand about Time Dilation
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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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Undergrad Gravity & Time: Is it Possible?
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Undergrad Can We Choose a Coordinate System for a Levi-Civita Connection on Manifolds?
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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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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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