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.
Threads
High School Black Holes as Gateways to Parallel Universes?
- EnglandSP
- · Replies 1 ·
High School Michelson-Morley Exp: Laws of Reflection Explained
- GAURAV DADWAL
- · Replies 4 ·
Undergrad Requesting clarification about metric tensor
- vibhuav
- · Replies 33 ·
Undergrad Proof that Galilean & Lorentz Ts form a group
- Malvia
- · Replies 18 ·
Undergrad Coordinate singularity at Schwarzschild radius
- zonde
- · Replies 57 ·
Undergrad Can Black Holes Create a Path for Lovers to Meet?
- stevendaryl
- · Replies 7 ·
Graduate Lorentz-Einstein law of motion for a point particle
- member 11137
- · Replies 1 ·
High School Metric Tensor and The Minkowski metric
- sqljunkey
- · Replies 2 ·
High School Time Dilation & Length Contraction: Does Relativity Work for Mediums?
- Mohammed Ayaz Quadri
- · Replies 9 ·
Undergrad Testing GR to What Energy Level?
- Arcturus7
- · Replies 5 ·
Undergrad Weak Gravitational Field: Solving Einstein Field Eqs
- deRoy
- · Replies 3 ·
High School What is the physics of motion through space?
- Netspirit
- · Replies 35 ·
Graduate Exploring the Stress-Energy Tensor of a Perfect Fluid
- pervect
- · Replies 3 ·
Undergrad Can General Relativity Accommodate Spaces Without Killing Vectors?
- Tio Barnabe
- · Replies 6 ·
High School Time dilation and 2 identical clocks
- Ross Arden
- · Replies 90 ·
High School Pressure Vessel Length Contraction and Pressure Comparison in a Spaceship
- Ross Arden
- · Replies 26 ·
Graduate Geodesic Distance & Maximally Symmetric Spacetimes: Why Does it Matter?
- highflyyer
- · Replies 7 ·
Undergrad Special Relativity: Kinetic Energy Expansion and Contradictions
- Das apashanka
- · Replies 14 ·
Undergrad Velocity addition and conservation of the energy
- sha1000
- · Replies 21 ·
High School What is a Clock? Syncing Technologies Explained
- Torog
- · Replies 105 ·
Undergrad Speed of Light & Magnetic Field: Condensing Wave Speed?
- Nicola321
- · Replies 2 ·
High School Why Isn't Work Equal to Einstein's E=mc²?
- learning_physica
- · Replies 8 ·
Undergrad Why the speed of light is constant for every observer?
- Arman777
- · Replies 9 ·
Undergrad Getting Invariant Curvature from Momentum & Energy
- Amaterasu21
- · Replies 9 ·
Undergrad Line Element in Minkowski Space: Geometric Meaning
- Joe Cool
- · Replies 3 ·
Graduate Correct coordinate transformation from Poincare-AdS##_3## to global AdS##_3##
- highflyyer
- · Replies 3 ·
Undergrad Survival Time in Black Hole: Myth Debunked
- nomadreid
- · Replies 9 ·
High School Why do photons allow Doppler shift
- Buckethead
- · Replies 57 ·
Graduate Time dilation and simultaneity: easier to see with a train
- Erland
- · Replies 15 ·
High School Why Do We Need Gravitons for Understanding Gravity?
- Fig Neutron
- · Replies 8 ·
High School Life on a planet near a black hole
- livelar
- · Replies 10 ·
Undergrad Geodesic Equation: Understanding Proper Time & x^α
- Silviu
- · Replies 6 ·
Undergrad Evaluating metric tensor in a primed coordinate system
- vibhuav
- · Replies 7 ·
Undergrad Velocity difference not preserved in special relativity
- Malvia
- · Replies 6 ·
Undergrad Gravitational Waves Affecting EM Fields: Evidence & Implications
- vibe3
- · Replies 11 ·
Undergrad Time & Space Expansion: High Schooler Qs
- Mayed Al-Tunaiji
- · Replies 5 ·
Graduate Leonhard Euler's 4-Squares Identity & Maxwell's Equations
- Edgar53
- · Replies 6 ·
Undergrad Einstein's views on gravity and inertia
- zonde
- · Replies 9 ·
Undergrad Can light near a black hole travel in -t in external coords?
- TGlad
- · Replies 10 ·
Graduate Maximizing survival time when falling into a black hole
- tom.stoer
- · Replies 58 ·
Undergrad Some suspected Black hole mergers
- exponent137
- · Replies 2 ·
Undergrad Tetrad formalism outside of the equatorial plane
- Vrbic
- · Replies 17 ·
Undergrad Definition of Vector Field in General Relativity
- Jianbing_Shao
- · Replies 5 ·
High School Relativistic Spring-Mass Oscillator: A Paradox?
- Alfred Cann
- · Replies 9 ·
High School Answer Questions on Relativity & Speed of Light | Beginner Physics
- nick J
- · Replies 8 ·
Undergrad What happens to the stuff that enters a black hole?
- Jay Addy
- · Replies 13 ·
High School Does Einstein's Field Equations Explain Space Density in Different Regions?
- sqljunkey
- · Replies 12 ·
Graduate Light-clock and time dilation [was: Hydrogen atom expressed mathematically]
- erik giles
- · Replies 47 ·
Undergrad Energy Change: PE to KE in Different Frames
- Dadface
- · Replies 8 ·
Undergrad Is Length Contraction Accounted for in the Analysis of a Moving Clock?
- Ross B
- · Replies 15 ·
High School Gravity Illusion: Questions on Space-Time Curvature Granularity
- gaaah
- · Replies 4 ·
Undergrad Non-zero components of Riemann curvature tensor with Schwarzschild metric
- Pencilvester
- · Replies 14 ·
High School Special Relativity & Relativistic Mass
- Jimmy87
- · Replies 25 ·
Undergrad Atomic Clock Running Rate: Adjustment Possibilities?
- exmarine
- · Replies 6 ·
Undergrad Verifying claims about backwards time travel
- girts
- · Replies 19 ·
High School Time Dilation Effects: Hafele & Keating Experiment Revisited
- Torog
- · Replies 12 ·
High School People-Safe Event Horizon: Can Alice & Bob Experiment?
- Swamp Thing
- · Replies 16 ·
Graduate Faraday Tensor Conflicts: MTW vs. Wikipedia
- Cesarth
- · Replies 2 ·
Undergrad Is my thought right or wrong? Light and a moving observer
- thatoekhant
- · Replies 27 ·
Undergrad An exception to the principle of equivalence?
- e2m2a
- · Replies 18 ·
Undergrad Metric & One Forms: A R2 Confusion
- Silviu
- · Replies 9 ·
Undergrad Transformer Output in Non-inertial Frame: Frequency Change?
- Samson4
- · Replies 6 ·
High School What Are the Benefits of LIGO & VIRGO's Gravitational Wave Detection?
- parshyaa
- · Replies 7 ·
Graduate Global solution to parallel transport equation?
- Jianbing_Shao
- · Replies 10 ·
Undergrad Help with special relativity mathematics
- Santilopez10
- · Replies 14 ·
Undergrad How does time add up to 1 second with infinite smaller amounts of time?
- Gondur
- · Replies 16 ·
Undergrad Conserved Quantities in GR: Explained
- Silviu
- · Replies 1 ·
Undergrad Was Einstein's Proof of E=MC^2 Flawed?
- bhobba
- · Replies 7 ·
Undergrad Time Dilation: Get Answers to Your Questions
- Junkwargo
- · Replies 3 ·
Undergrad Time Dilation and photodetectors
- Samson4
- · Replies 28 ·
Undergrad Non-Coordinate Bases Explained
- Silviu
- · Replies 27 ·
Undergrad Frame Dragging Direction for Outward Moving Test Mass
- Sonderval
- · Replies 2 ·
Undergrad Do Massless Particles Have Transitory Mass During Reflection?
- kiwizimbo
- · Replies 11 ·
High School Solving the Mystery of Simultaneity: A Relativity Question
- TheQuestionGuy14
- · Replies 18 ·
Undergrad Time dilation again, Einstein or Resnick?
- exmarine
- · Replies 114 ·
High School Is Time Dilation Explained by Special Relativity, General Relativity, or Both?
- Edem
- · Replies 38 ·
Undergrad Confusion with relativity of simultaneity
- Grisha
- · Replies 29 ·
Undergrad Gravity changes produced by a compressed and stretched spring
- John K Clark
- · Replies 70 ·
Undergrad Twin paradox not including accelerations, it is wrong where?
- Luis Babboni
- · Replies 72 ·
Undergrad What is the Alice/Bob thought experiment in Malament-Hogarth spacetime?
- nomadreid
- · Replies 4 ·
Undergrad Relative Speed Impact on Synchronization: Clock Comparison
- cronnin
- · Replies 19 ·
High School Against length contraction explanation of magnetism
- jartsa
- · Replies 24 ·
High School Causality and the Lorentz transformation
- Joao
- · Replies 15 ·
Undergrad Computational physics - Light trajectory near black hole
- PhysicsMajorLeo
- · Replies 7 ·
High School How to measure Gravitational waves
- Number 42
- · Replies 49 ·
Graduate Free Simulator Software for Vacuum Field BVPs | Tom
- TGlad
- · Replies 3 ·
Undergrad GR: Mass of Potential Energy in Weak Field Limit
- zonde
- · Replies 6 ·
Undergrad Questions about the general principle of relativity
- Frank Castle
- · Replies 5 ·
Undergrad Does Gravity Affect Space Density in a Vacuum?
- grahas
- · Replies 6 ·
Undergrad How Does the Einstein Equivalence Principle Explain Energy Source Curvature?
- Frank Castle
- · Replies 4 ·
High School Can Time Dilation Affect the Mechanical Functioning of a Clock in Orbit?
- ISamson
- · Replies 17 ·
Undergrad Electric currents and length contraction
- Luis Babboni
- · Replies 2 ·
Undergrad Why transformed E and B are asymmetric?
- Luis Babboni
- · Replies 8 ·
Undergrad Understanding the Einstein Equivalence Principle
- Frank Castle
- · Replies 4 ·
Undergrad Gravitational field seen be relativistic particle
- friend
- · Replies 1 ·
Undergrad Velocity measurement by a stationary observer in GR
- sergiokapone
- · Replies 46 ·
Undergrad Lie Derivatives vs Parallel Transport
- Silviu
- · Replies 7 ·
High School Resolving the Relativity of Simultaneity: A Geometric Approach
- Andrew1955
- · Replies 75 ·
Undergrad Demonstration of time dilation
- fab13
- · Replies 21 ·
High School Time Travel: Lorentz Invariance & Possibilities
- John Fennie
- · Replies 9 ·