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 Clock hypothesis, gravity time dilation and Equivalence Principle
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Undergrad Nearly Lorentz Coordinate Systems: Is h a Tensor?
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Undergrad Finding Covariant and Contravariant components of Cylin Coor
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Undergrad Minkowski metric beyond the event horizon
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Undergrad Incompleteness of geodesics as ##t \longrightarrow 0##
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Undergrad Going from Galilei to Minkowski
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Undergrad Calculate Time at Infinity for GR Observer: A Photon's Journey
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Undergrad Geodesic Deviation in Static Spacetime: Flat Geometry
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Undergrad How is a vector a directional derivative?
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Undergrad Answer: Understanding the Effect of Gravity on Falling Objects
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Undergrad Singularities in General Relativity
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Undergrad Explore Homogeneity of Space: Effects on Relativity Theory
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Undergrad Manipulating Christoffel Symbols: Questions & Answers
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Undergrad Determining Mass & Info of Merging Neutron Stars from LIGO Signal
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Undergrad Relativistic field of moving charge. Why is it symmetric?
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Undergrad Can't understand this argument for Lorentz transformation y'=y
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Undergrad Maxwell's Equations, Hodge Operators & Tensor Analysis
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Undergrad Einstein Field Eqs: Stress Energy Tensor Explained
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Undergrad Finding distance in polar coordinates with metric tensor
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Undergrad Speed of gravity vs. speed of light
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Undergrad Relativistic Mass Calculation with 4th Dimensional Vector
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Undergrad Contradiction between two fundamentals
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Undergrad Torsion & Non-Closed Rectangle in Feynman & Penrose
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Undergrad Spinning disk, length contraction, & equivalence principle
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Undergrad Theorem Proved: Universal Speed C in SR?
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Undergrad How do I apply weak field approximation to the Einstein field equation?
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Undergrad Why must the spacetime we inhabit be a geodesically complete manifold?
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Undergrad GR in Newtonian Limit: Understanding Weak Fields & Inequalities
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Undergrad Where Did LIGO Find Merging Black Holes?
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Undergrad Gravitational Wave Modeling: A Thought Experiment
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Undergrad Understanding the Proof of Delta Variation for Determinant of Metric
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Undergrad Einstein Hilbert action
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Undergrad Gradient in the rate of time vs acceleration
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Undergrad How do you calculate the time component of a 4-Vector
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Undergrad EM Force vs. Gravity: Modeling Spatio-Temporal Curvature
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Undergrad Schwarzschild equation of motion: initial conditions
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Undergrad Shape of Vacuum Space: Constant Spatial Volume with Time
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Undergrad LIGO and light speed constancy
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Undergrad Are Local Lorentz Transformations Possible with Varying ##\vec{x}##?
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Undergrad Are Electric and Gravitational Fields Different for Moving Objects?
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Undergrad Speed of light on a moving platform
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Undergrad Stress Energy Tensor: How Does It Implicate Flow of Energy?
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Undergrad Can two gravitational waves orbit each other?
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Undergrad Positive Charge Magnetic Fields: Real World Examples
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Undergrad Velocity Addition Formula: u_y > c?
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Undergrad Unexpected result on Lorentz transformation
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Undergrad Understanding Stress Energy Tensor of Fluids
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Undergrad Index Gymnastics: Matrix Representations & Rank-2 Tensor Components
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Undergrad Does Feynman's Work on Gravitons Clarify Quantum Gravity?
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Undergrad Pressure term in the energy stress tensor
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Undergrad How does Einstein define simultaneity in his 1905 paper?
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Undergrad Comparing Vacuum Solutions to Topologies of Einstein Space
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Undergrad Is Gravity Invariant During Motion?
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Undergrad Twin paradox in SR and its applicability to radioactive decay
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Undergrad Proper time to reach the singularity - rocket acceleration
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Undergrad How does this not get me traveling to another star FTL?
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Undergrad Photon states should not evolve?
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Undergrad How can information possibly be created?
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Undergrad How much would time pass between watching the sun set ....?
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Undergrad Time in QFT vs. QM: Exploring Differences in Treatment
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Undergrad Gravitational time dilation in Weinberg's "Cosmology"
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Undergrad Non-radial geodesics in Schwarzschild spacetime
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Undergrad My conclusions regarding "the laws of nature"
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Undergrad Domain of Applicability of Post-Newtonian Formalism
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Undergrad Why do people keep saying photons are timeless?
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Undergrad Force on an Object according to the General theory of relativity
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Undergrad Could Gravity Ever Be Negative?
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Undergrad Relativistic Aberration: Intuitive Understanding
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Undergrad Derivation of geodesic equation from the action - quick question
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Undergrad Mechanical clocks and time dilation
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Undergrad Is the Massless Photon Explanation for E=mc2 Valid?
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Undergrad Does the *First Postulate* Prohibit different time dilations?
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Undergrad Solving Quantum Mechanics in Space-Time: Effects of General Relativity
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Undergrad Is there an analog to Einstein's field equations for 2D?
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Undergrad How to prove gravitational mass & inertial mass equivalence?
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Undergrad Length Contraction: Muon vs Earth Frames
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Undergrad Really parabolic light ray in an accelerated elevator?
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Undergrad Gravitational Bending vs. Refraction
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Undergrad Spaceship moves away from the Earth
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Undergrad Inflation theory and General Relativity
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Undergrad Can Flamm's Paraboloid be described by Cartesian equations?
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Undergrad Is Expansion the Same as Contraction?
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Undergrad Large object entering a small BH
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Undergrad Michelson Morley experiment: relativistic explanation
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Undergrad Non-Vacuum Solutions for Black Hole Evaporation and Quantum Gravity
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Undergrad Gravity as geometry vs gravity traveling at c
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Undergrad Why are the equations for dt/du and Dt[a]/Du equal in the geodesic equation?
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Undergrad Detecting Gravitons: Challenging the Foundations of General Relativity
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Undergrad GR and its bending of space time
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Undergrad Bending of light - caused by gravity or relativity?
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Undergrad White holes and other universes
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Undergrad Metric for Lambdavacuum EFE - Radial Coordinates
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Undergrad Curvature of space and spacetime
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Undergrad Rotating Black Holes: A Century of Discovery & Beyond
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Undergrad First Energy or Mass: Universe Origins
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Undergrad What happens at r ≤ rS in the Schwarzschild metric?
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Undergrad Question about modeling continuous spacetime
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Undergrad Particle at event horizon as black hole evaporates
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Undergrad Relativistic Aberration Formula & Lorentz Transformation
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Undergrad The spacetime curvature changed by an object
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