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
Graduate Simple argument for area conservation under Lorentz transformation?
- bcrowell
- · Replies 44 ·
Graduate All rotating black holes will eventually stop?
- espen180
- · Replies 6 ·
Graduate Schwarzschild affine connection
- alle.fabbri
- · Replies 5 ·
Graduate Covariant divergence question from Landau and Lifshitz
- maverick280857
- · Replies 4 ·
Graduate Why does Lorentz contraction happen if frames can adjust their measurements?
- Unto
- · Replies 15 ·
Graduate Einstein's box in media and mass-energy equivalence
- sunroof
- · Replies 10 ·
High School Is it possible? (faster than light in a medium)
- IPhO' 2008
- · Replies 7 ·
Graduate S,S' in the Lorentz transform.
- IPhO' 2008
- · Replies 6 ·
Undergrad A and B are twins,A notice B moving away from him with velocity v
- IPhO' 2008
- · Replies 3 ·
High School Why Does Light Slow Down in a Medium?
- IPhO' 2008
- · Replies 1 ·
Graduate Contradiction between Quantum Mechanics and Special Relativity？
- sunroof
- · Replies 14 ·
Graduate Einstein's box of phonons and energy-mass equivalence
- sunroof
- · Replies 4 ·
Graduate Theory of relativity second postulate
- Paul77
- · Replies 17 ·
Graduate Minkowski Norms and Lorentz Metric in Spacetime
- Rasalhague
- · Replies 8 ·
Graduate Black hole can regard as most efficency mass-energy convecter?
- magnetar
- · Replies 3 ·
Graduate Learning general relativity without tensor background
- sonar
- · Replies 5 ·
Graduate Relativistic Collision Effects on Speed, Mass
- gsimo1234
- · Replies 3 ·
Graduate Is Time Relative? The Twin Experiment and Its Implications
- land_of_ice
- · Replies 44 ·
Graduate Solving Space-Time Variation in the Ocean
- vdv
- · Replies 1 ·
Graduate Relative Motion: Framing Object Velocity
- Edi
- · Replies 1 ·
Graduate Does spacetime could curved in a square way ?
- hamilton00989
- · Replies 3 ·
Graduate Riding on a Photon: Is Time Really Eternal?
- hamilton00989
- · Replies 3 ·
Undergrad F = qvB in Relativity: A Charge in Magnetic Field
- IPhO' 2008
- · Replies 3 ·
Graduate Why does time dilation only affect GPS satellites in one direction?
- cfrogue
- · Replies 119 ·
Graduate Power Required to Accelerate Space Craft to Near Light Speed
- edgepflow
- · Replies 3 ·
Graduate Do Charged Particles Radiate in Different Frames of Reference?
- High Mass
- · Replies 1 ·
Graduate Energy density of grav. field - analagous to EM
- ringerha
- · Replies 7 ·
Graduate Why does kinetic energy differ between reference frames in relativity?
- espen180
- · Replies 4 ·
Graduate Electric resonance in a moving frame
- vin300
- · Replies 15 ·
Graduate How Do Black Holes Increase Their Mass Despite Observational Paradoxes?
- jf22901
- · Replies 17 ·
Undergrad Can a moving observer detect a magnetic field from a stationary electric charge?
- crx
- · Replies 4 ·
Graduate Formalism for an extended object
- alejandrito29
- · Replies 2 ·
Graduate How does an observer's perception of a black hole change while diving into it?
- LukeD
- · Replies 16 ·
Graduate Why aren't the lightning strikes simultaneous in the train frame?
- Grimble
- · Replies 80 ·
Graduate What merging black holes reveal about the nature of time?
- sciroccokid
- · Replies 4 ·
Undergrad A 13-Year-Old's Physics Dilemma
- fur
- · Replies 1 ·
Graduate Could Space-Time Variability Explain Unexpected Spacecraft Speeds?
- cary cato
- · Replies 1 ·
Graduate Observing the Universe at Relativistic Speeds: Confusion and Curiosity
- ExecNight
- · Replies 6 ·
Graduate GR Resources: Books 3,4,6 & Arxiv Free Material
- qspeechc
- · Replies 1 ·
Graduate Does Relativistic Length Contraction Induce Stress in Physical Bodies?
- matheinste
- · Replies 3 ·
Graduate Equivalence principle to other forces?
- Gerenuk
- · Replies 6 ·
Graduate Does Object Configuration Remain Consistent After Relativistic Transport?
- matheinste
- · Replies 6 ·
Graduate Q. about Bradley's Stellar Aberration
- Zorba
- · Replies 2 ·
Graduate What is the relationship between black holes and singularities?
- Pequinino
- · Replies 15 ·
Graduate Calculating Covariant Derivate of Tensor T^u_v
- alejandrito29
- · Replies 2 ·
Graduate Does c-invariance in SR postulate need inertial frames ?
- myspacetime
- · Replies 14 ·
Graduate Reconciling gravitational redshift with time dilation in general relativity
- NanakiXIII
- · Replies 9 ·
Graduate Why is invariant interval invariant?
- kof9595995
- · Replies 29 ·
Graduate Can a rotating fan extract energy from relativistic mass differences?
- TinManZin
- · Replies 3 ·
Graduate Wormole and reactionless drive
- Edi
- · Replies 15 ·
Graduate Local detectability of frame-dragging
- bcrowell
- · Replies 4 ·
Graduate Does the Heisenberg Uncertainty Principle Affect Relativity Calculations?
- Tegg Mentall
- · Replies 8 ·
Graduate Einsteins gravity theory (bending space) question
- superstring10
- · Replies 8 ·
Graduate Why is there no factor of 3 in tensor integration over a unit sphere?
- tim85ruhruniv
- · Replies 3 ·
Graduate How can inertial mass and active gravitational mass be equal?
- TurtleMeister
- · Replies 39 ·
Graduate Matrix Formalism of GR: Good References for Writing Equations
- thehangedman
- · Replies 1 ·
Graduate The Grand Father paradox is flawed.
- frankinstein
- · Replies 33 ·
Graduate Continuous application of Lense-Thirring precession: flyby anomalies
- moving_on
- · Replies 1 ·
Graduate Slow clocks on moving body is an illusion?
- jakesee
- · Replies 4 ·
Graduate How is the -(ct)^2 term in Minkowski metric conceived?
- jakesee
- · Replies 2 ·
Graduate Fractal Nature of Gravitational Forces
- Lostpinky
- · Replies 2 ·
Graduate What is the law of reflection in special relativity?
- spaceofwaste
- · Replies 1 ·
Graduate How is mass density affected by speeds near c?
- elliottmarter
- · Replies 5 ·
Graduate Length contraction in Lorentzian relativity
- zenith8
- · Replies 30 ·
Graduate Faster than the speed-of-light
- Elvin12
- · Replies 24 ·
Graduate Is there a gravitational potential in general relativity?
- Vectronix
- · Replies 4 ·
Graduate Confusion about a laser shining perpendicular to a moving inertial frame
- gupyuson
- · Replies 6 ·
Graduate Is this idea of time travel consistent with relativity?
- superpaul3000
- · Replies 3 ·
Graduate Gravitational redshift and time dilation
- Zman
- · Replies 10 ·
Undergrad Did Gravity Impact the Time Travel of Sergei Krikalyov?
- sciroccokid
- · Replies 9 ·
Graduate Calculating Final Velocity of Matter into Black Hole Event Horizon
- eli_lied
- · Replies 17 ·
Graduate Which time dilation formula is correct: γΔt or Δt/γ?
- Grimble
- · Replies 146 ·
Graduate Principle of Least Action - Straight Worldline on a Geodesic
- runner108
- · Replies 4 ·
Graduate Trying to understand the Why or Relativity.
- Batman24
- · Replies 17 ·
Graduate Slowly add mass to a neutron star till it collapses.
- Spinnor
- · Replies 6 ·
Graduate Bivectors, Cartan Geometry and Curvature
- Orbb
- · Replies 3 ·
Graduate Relativistic Acceleration Contradiction
- Threadlike
- · Replies 10 ·
Graduate [Special relativity - Mathematical background] Tensor and pseudo-tensor
- wizard85
- · Replies 2 ·
Undergrad Does relativistic mass increase cause an object to slow down again?
- sudar_dhoni
- · Replies 12 ·
Graduate 45 dergree mirrors in Special Relativity
- YellowTaxi
- · Replies 13 ·
Undergrad Is 'Do black holes exist?' an ill-posed question?
- Phrak
- · Replies 12 ·
Graduate Energy Density of the gravitational field
- Geometrick
- · Replies 1 ·
Graduate What is the Role of the Cosmological Constant in the Expansion of the Universe?
- Shahin.Omar
- · Replies 1 ·
Graduate Anti-matter black-hole, matter black hole, different?
- Spinnor
- · Replies 6 ·
Graduate How Does Relativity Affect the Length of Spinning Circles at High Speeds?
- Quinzio
- · Replies 20 ·
Graduate Expanding universe and light detection
- UseAsDirected
- · Replies 1 ·
Graduate Wormhole Time Machine: As Time Goes On
- edgepflow
- · Replies 3 ·
High School Why is light travelling in straight line? (see restrictions)
- sten
- · Replies 23 ·
Graduate Is Time a Testable Dimension in Science?
- mangaroosh
- · Replies 29 ·
Graduate Acceleration in an inertial worldline?
- runner108
- · Replies 9 ·
Graduate Explanation of Wiki regarding Geodesics as Hamiltonian Flows:
- runner108
- · Replies 3 ·
Graduate Four-vector from 3 space components?
- jason12345
- · Replies 3 ·
Graduate I'm learning about relativity and, by extension, the classic
- fhisicsstudnt
- · Replies 30 ·
Graduate Doing General Relativity with Cartesian coordinates?
- kochanskij
- · Replies 2 ·
Graduate Why does the future light cone have a definite cone shape in relativity?
- curiousphoton
- · Replies 8 ·
Graduate Reciprocal Lorentz Contraction Mismatch
- nutgeb
- · Replies 5 ·
Graduate Calculating Time Dilation and Simultaneity in Special Relativity
- cfrogue
- · Replies 13 ·
Graduate Gaussian Co-ordinates-background and derivation
- K29
- · Replies 2 ·
Graduate Is black hole elementary particle?
- Sergei65
- · Replies 2 ·
Graduate Speed of light vertical and horizontal in gravity
- Zman
- · Replies 1 ·