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 Relativistic Momentum Invariance in Perpendicular Boosts
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Undergrad Galilean Equivalence Principle: Extended Objects
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Undergrad Fixed Stars Moving Faster Than Light? Problem?
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Undergrad Opposite of Black Hole - Matter Repulsion?
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Undergrad Special relativity of two clocks
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Undergrad Small back hole merging more massive body
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Undergrad Looking out from a event horizon
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Undergrad Gravitational Mass of Photons: Passive & Active
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Undergrad Do Fields Affect 4-Momentum Conservation?
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Undergrad Time dilation in special vs. general relativity
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Undergrad Maxwell's Homogeneous Eqns: Notation Explained | Mick
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Undergrad How Do You Correctly Apply Indices in Tensor Calculus for Curvature?
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Undergrad Light Beam Bending by Mass: Equation & Explanation
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Undergrad Tensor Formalism in GR: Why We Need Tensors
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Undergrad Permeability/permittivity constants and one way speed of c
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Undergrad Raising index on covariant derivative operator?
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Undergrad Qs re Hawking Radiation – Part I
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Undergrad Hawking Radiation: Qs re Energy Density at r > Rc
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Undergrad 2D Time dilation simulation with several clocks?
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Undergrad Cosmological Constant: Expanding Universe & Data Contradiction
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Undergrad Space and time as fields of mass-energy
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Undergrad Field equations fully written out
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Undergrad GR vs SR: Is a Connection Necessary?
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Undergrad Consequences of length contraction
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Undergrad Gravitational potential energy and rest mass
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Undergrad Time dilation in relativistic Doppler effect
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Undergrad Calculating Radius and Mass of Disc for Velocity 0.75C
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Undergrad Is the universe a larger version of a black hole?
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Undergrad MOND: Explaining the “Missing Mass” Problem in Galaxies
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Undergrad Metric Conservation Law in 2D Spacetime
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Undergrad Do Distant Planets Move Faster Than Light Seen From Earth?
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Undergrad Velocity of Timelike Curve in Special Relativity
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Undergrad Clarifying Equivalence Principle
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Undergrad Taylor and Wheeler's Spacetime Physics (1st Edition)
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Undergrad Morin's Rocket Example: Chapter 12, Page 606
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Undergrad Show 4-Potential is 4-Vector in Lorenz Gauge
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Undergrad Speed of light or Speed limit of Spacetime?
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Undergrad Communicating at Near-Light Speed - Time Dilation
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Undergrad Motivation for the usage of 4-vectors in special relativity
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Undergrad Is motion through space or spacetime?
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Undergrad Are the Lorentz transformation formulas on wikipedia correct?
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Undergrad Does non-gravitational acceleration produce waves?
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Undergrad Space & Time: 2 Qs for Forum Members
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Undergrad Gravitational Constant in GR: How & Why?
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Undergrad Energy Locally Never Negative: Explained
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Undergrad Production of Gravitational Waves Problem: Energy Flux
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Undergrad Proper mapping of the second postulate into math
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Undergrad Why curved spacetime produces gravity (am I right?)
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Undergrad Why Can't Lorentz Boosts be Used for Length Contraction?
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Undergrad Spacetime Changes vs Matter Location Inside
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Undergrad What is Planck curvature and its significance in the expansion of the universe?
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Undergrad Event Horizon of Telescope Through Earth: Does It Exist?
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Undergrad Implications of Relative Simultaneity: Carl & Shirley's Observations
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Undergrad Clock Thought Exp: A Light-Year Time Paradox
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Undergrad Are Special Relativity effects valid for angular velocity?
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Undergrad Parametrisation of timelike curves using proper time
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Undergrad Is Maxwellian Gravitoelectromagnetism a useful analogy?
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Undergrad Zeroth component of 4-momentum & energy-momentum relation
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Undergrad (How) does the LIGO experiment falsify Newtonian gravity?
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Undergrad How Are Gravitational Waves Connected to Black Holes?
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Undergrad Mass to Energy Transformation for ordinary Chemical reaction
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Undergrad Uncharged Particle near Charged Mass
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Undergrad Breakthrough Starshot: 1st Macroscopic Test of Longitudinal Acceleration
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Undergrad What is the essence of general relativity for beginners?
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Undergrad My lecturer says "Special relativity is absolutely wrong"
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Undergrad Gravity Waves & Gravitomotive Force: Is Rotation Possible?
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Undergrad Why is speed of light constant in all frames of reference?
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Undergrad Normal Vector & Acceleration: An Explanation for Julien
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Undergrad Definition of a Lorentzian Wormhole
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Undergrad Doppler shift for an observer in circular motion
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Undergrad Stanford: objects in spacetime all move at constant speed c?
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Undergrad Light speed and the LIGO experiment
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Undergrad Understanding 4-Momentum in General Relativity
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Undergrad Is the Block Universe Model Necessary if Presentism Can Adapt to Relativity?
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Undergrad Newtonian limit of Schwarzschild metric
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Undergrad De Broglie Matter Waves: Where Does the Fraction Come From?
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Undergrad Can Tachyonic Antitelephone Overcome Causality and Chronology Protection?
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Undergrad Geodesics in Curved Spacetime: What is the Significance of the ct Increment?
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Undergrad Generalization of Lorentz ether
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Undergrad Is Zitterbewegung Considered in the Theory of Relativity?
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Undergrad New interpretations of the Pioneer effect ?
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Undergrad Understanding 4-Momentum in Special Relativity
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Undergrad Confusion about killing horizon in Carroll
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Undergrad The Order and Valence of Tensors
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Undergrad Proving Orthogonality of Vector w/ Schnutz Special Relativity Tensors
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Undergrad Open Problem in S.R. Pre-Determinism: Unresolvable Question
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Undergrad Deriving Einstein's Relativity Postulates from Minkowski Spacetime
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Undergrad Measuring Speed of Light from Galaxies & Shapiro Time Delay
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Undergrad Time Dilation: Lorentz Transf. & Proper Time Equations
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Undergrad Frame dependency of accelerations
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Undergrad Basic question, harmonic coordinate condition algebra
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Undergrad Question about Mercury's orbit discrepancy
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Undergrad Volume of light cones of two events
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Undergrad Dark Energy vs Gravity: Expansion vs Contraction
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Undergrad Composite Galilean transformation in 2 dimensions
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Undergrad General Relativity within the confines of a Hilbert Space
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Undergrad Motivation for the introduction of spacetime
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Undergrad Researching Causal Structure in Classical GR for Graduate Course
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Undergrad Did universe expand faster than speed of light?
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Undergrad Light deflection and geodesics
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