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  1. paradox of gravitational potential energy
  2. scalar invariance across inertial and non-inertial frames
  3. local lorentz frame
  4. matter-antimatter ship in GR clock paradox - fuel consumption
  5. how possible is time travel?
  6. translating and rotating rod
  7. Relativity and Quantum's multy universes
  8. tidal forces and geodesic deviation: a principle question
  9. Interval
  10. Question on Twin Paradox
  11. Derivation of the Special Theory
  12. Faster than light?
  13. Special relativity simulation issue
  14. Relativity
  15. equal and opposite electric fields?
  16. Lorentz transformation, Einstein transformation,Lorentz-Einstein transformation
  17. does superposition hold for relativistic particles?
  18. Lorenz contraction help please.
  19. Relativity equation - calculating the algebraic limit
  20. time dilation limit? (how much does time dilate at "c")
  21. light cones in faster than light travel
  22. A question regarding relativity and information transport
  23. Can gravity creating by energy?
  24. Riding on a light beam....
  25. Fitzgerald -Lorentz contraction
  26. Gravitational potential from QM-like phase
  27. Mass dilation determination
  28. Proving that the scalar product is invariant
  29. Metric Tensor question
  30. What has the speed of light got to do with time travel?
  31. Mass
  32. GPS and relativity.
  33. Gravity and charge question
  34. Gravitational waves adn Black holes frequency
  35. space-time
  36. Principle of relativity and energy?
  37. Uniqueness of solutions to EFE?
  38. An experiment.
  39. Force-free motion from a busted Lagrangian
  40. Relativity, speed of light and stuff...
  41. Does charge change with velocity?
  42. What happens when you apply a force in space over infinite time?
  43. What Are Closed Timelike Curves?
  44. about the Rindler metric
  45. Stupid Question
  46. what happens to matter inside a black hole?
  47. synchronization gauge
  48. massless particles
  49. Does massless particles experience gravity
  50. Conservation of Energy
  51. Riemann curvature tensor as second derivative of the metric
  52. Basic Energy-Momentum Issue
  53. Normalization of a delta function in curved spacetime
  54. light speed relative to accelerating & const vel source
  55. Robertson-Walker metric in higher dimensions (and problematic Riemann tensor)
  56. Does light bend light?
  57. Bondi k and everyday clock synchronization
  58. Einstein's equation ....
  59. Relative velocity.
  60. Origin of spatial metric
  61. Effect of acceleration on space-time fabric
  62. Does Light Have Mass?
  63. Speed of civilisation development
  64. Covariance and Contravariance
  65. Matrix Representation of Tensors?
  66. 'Faster than Light' Travel
  67. Equilibrium
  68. elevator metric
  69. Speed of Light
  70. a question about the speed of light puzzles me
  71. time travel applications
  72. Lagrangian for dust/perfect fluid
  73. warped space
  74. Bends in Space-Time vs Invariance
  75. More Twins Silliness
  76. Meaning of coordinates in GR
  77. Derivative of metric tensor with respect to itself
  78. How two clocks can each run slow in the other's reference frame
  79. Michelson-Morley experiment proves nothing
  80. two easy questions
  81. Another time dilation question
  82. two questions
  83. "Behavior of light accelerating"
  84. Revised Twin Paradox
  85. Accelerated coordinate systems
  86. velocity and proper acceleration
  87. tossing a clock
  88. Gravitational Theory, Don´t grasp it.
  89. Time dilation also for accelarated motion?
  90. Photonic computer
  91. watching young's double slit experiment in moving frame
  92. Why is a 3rd party important
  93. Newbie vs Einstein
  94. Mass>Energy-Gravity?
  95. ds notation for the metric
  96. Simultaneity - the equation
  97. Kepler & Einstein
  98. Coming to terms with the velocity addition formula
  99. nonstandard relativistic dynamics
  100. Thought experiment (SR)
  101. about spacetime curvature
  102. Do Closed Timelike Curves Exist?
  103. Kerr metric...
  104. Einstein hole argument
  105. General physics questions (experts)
  106. time dialation and ageing
  107. falling into a black hole
  108. Another speed of light question
  109. Slicing the spacetime "loaf"
  110. typo in d'Inverno?
  111. Shapiro Delay
  112. geometric spacetime split
  113. Space dilation in GR
  114. If the speed of light were zero
  115. How is velocity defined?
  116. Derivation of Gamma
  117. Define Electromagnetic Spacetime
  118. Is there a good introduction to Hawking Radiation?
  119. SR and Light Clocks - Confused!
  120. Third postulate of special relativity?
  121. Backscattering of light at a black hole
  122. Silly question
  123. confused
  124. crossing the event horizon of a black hole
  125. Anybody know how far off relativity becomes at large velocities and small distances?
  126. another Schwarzschild question
  127. Heavy question about nothing
  128. Question about "pressure" in GR
  129. A super n00b gravity question
  130. Speed of Light
  131. Gravitational time dilation from two or four bodies
  132. matter travelling faster then light inside a black hole
  133. Time dilation earth
  134. Can one diagonalize the Kerr metric?
  135. Question about exhaust velocity and terminal velocity
  136. 3 space dimensions
  137. Accelerations at various distances.
  138. Pole and Barn paradox - close the doors for good!
  139. some good (and entertaining) Yale intro lectures on SR
  140. Bouncing light question faster than c?
  141. Length contraction compression and Schwarzschild radius
  142. Frames of Reference
  143. quick question about light
  144. Question about Slowing light
  145. Gravity in relation to mass & energy
  146. about the accelerating spaceship
  147. precession angle per orbit of perhelion precession mercury
  148. frequency change of a photon falling to earth
  149. Relativistic Kinetic Energy
  150. E=mc² redux
  151. Why does light not pass through voids within atoms??
  152. Have the gravity waves been detected from the big bang?
  153. special relativity and apparent, actual and synchronized positions
  154. Does space expansion theory obey relativity laws??
  155. Requesting Simple Examples
  156. Conservation of Energy
  157. Space Time Fabric
  158. High frequency gamma ray.
  159. Universal Reference point in time
  160. Challenging problem in GR
  161. Photons that orbit at the event horizon.
  162. Charged particle at relativistic velocity
  163. energy in a human question
  164. Expanding universe & relativity
  165. About Schwarzschild Solution
  166. round trip (two way) speed of light
  167. speed of C
  168. Orbiting Time Dilation
  169. Intriguing Question
  170. Question about time.
  171. A doubt in simultaneity
  172. photon's mass
  173. speed of gravity and Baez's article
  174. SR's Length Contraction and Time Dilation
  175. fictitious force
  176. Identifications between the model and the real world
  177. Einstein's resolution of the "clock paradox"
  178. Determination of Riemann curvature tensor from tidal forces
  179. MTW questions
  180. Spinning at the speed of light?
  181. Proper acceleration
  182. tensor infinities
  183. gravitational force = inertial mass
  184. Time dilation and distances
  185. on the noton of reference frames force and acceleration
  186. the problem of simultaneity
  187. Trivial question about gravity affecting itself
  188. Stress energy tensor of a rotating hoop
  189. photon and mass questions
  190. Can mass go faster than the speed of light?
  191. What exactly is stopping us from unifying GR and quantum mechanics?
  192. Time Dialation Equation
  193. why can't gravity accelerate an object past c?
  194. extinction phenomena.
  195. Whats NASA saying?
  196. a question about the relativity
  197. What doesn't have gravitational mass?
  198. Lightman et al Problem 3.24
  199. Definition of Kronecker delta
  200. Lightman et al Question 3.10
  201. (special) relativistic effects made clear in animation
  202. A question on why Special Relativity holds
  203. Lorentz and Poincare groups
  204. about geometrized units
  205. Confused about gravitons
  206. How often does mass effect space
  207. Rotation and Gravity
  208. Dumb question on Unruh effect
  209. Would Gravity Waves Show Doppler Shift?
  210. Frequency shift of light between observers in Schwarzschild space-time
  211. Einstein's Field Equations
  212. Question about Light
  213. Noether's theorem
  214. On Petrov classification
  215. Does the metric really represent "intrinsic" spacetime in plain English?
  216. Is the speed of light a constant
  217. A universe without light
  218. Time-reverse symmetry of the principle of relativity
  219. Distance changes?
  220. Another question about speed of light
  221. Angular distance in SR
  222. A Thought Experiment with Time Dilation
  223. black hole question.
  224. Conservation law using Killing vector
  225. Analogue of Lorentz transformation in General Relativity.
  226. Whom do we consider as moving in special theory of relativity?
  227. What would you see.
  228. Advance of perihelion
  229. Bounded by spacetime
  230. Space-like intervals
  231. How Can V Draw Space Time Curve
  232. what is the meaning of topological black holes?
  233. Is Matter Made Up of Photons?
  234. Help with McMahon's Relativity
  235. Why can't we go faster than 300,000 km/s?
  236. simultaneity and a thought experiment
  237. Schwarzschild curvature
  238. Time Distortion
  239. space medium or infinity
  240. Photon acceleration
  241. Light Tag
  242. a weird "spherically symmetric" metric
  243. Time Dilation
  244. Gravitation ?
  245. Light speed in relation to the size of the universe
  246. LHC safety case
  247. homothetic vector fields?
  248. What properties of space determine gravity velocity?
  249. Does the expansion of Space require continuous energy??
  250. little problem with group velocity
  251. 3 and 4 velocity and acceleration
  252. A more interesting Pendulum Paradox
  253. In this scenario is faster then light speed possible?
  254. Is there a gravitational equivalent to magnetism?
  255. I would like an answer please.
  256. Thought On Gravity
  257. Coordinate transformation and choice of a suitable coordinate system.
  258. negative clock reading
  259. Black hole physics ...
  260. geodesics in metric geometry and affine
  261. Quick Question about Time Dilation
  262. Time dilation
  263. Questions about acceleration in SR
  264. On GR and Interstellar exploration
  265. why does light move at...
  266. relative moving charge
  267. Possible Analogy for Objects Moving at C
  268. Question about Acceleration and Relativity
  269. On The Ether Concept In Physics
  270. Space & time
  271. Classical Pendulum Paradox
  272. Zz please read this!
  273. Warped space vs gravitrons
  274. Is motion relative to the size of an object
  275. Velocity
  276. I would like an answer please.
  277. Eddington - GR as description
  278. Speed of light - with observer experiencing gravity
  279. The General "Principle" of Relativity
  280. Matter tells matter how to move
  281. Why Does light have a speed limit.?
  282. rest length in general relativity
  283. Group theory and Spacetime symmetries
  284. New Relativity FAQ
  285. Who coined the term "relativistic mass"
  286. Pushing in the wrong direction
  287. Curved space-time and dimensions
  288. Light
  289. Energy-momentum tensor for a scalar field (sign problem!)
  290. Michaelson Morley experiment.
  291. radial change
  292. Worldline of photon in comoving coordinates.
  293. Wave Function in Lorent tranform
  294. tachyons
  295. time dilation and the pioneer spacecraft
  296. please send me link
  297. faster than light
  298. Temperature and special relativity
  299. Help with relativity [relativistic rocket]
  300. Is this tensor operation valid?
  301. Just a “simple” question about the speed of light and c^2.
  302. the very significant and positive result of the MM Exp
  303. Absolute Zero and time travel?
  304. Gravitational Time Dialation
  305. Why not fewer visible stars in far away galaxies?
  306. Motion of Spectral signature
  307. Gravitons or Warped Space-Time?
  308. Relativistic Star Brightness
  309. question on Einstein's Simple derivation of Lorentz Transformation.
  310. Charged black hole
  311. Measure of Distance to Stars
  312. Black hole
  313. Accelerating universe != conservation of energy?
  314. forumulation of field equations
  315. Drawing Penrose diagram figures
  316. Gravity AND curved space-time bending light
  317. Acceleration or gravitational time dilation the same?
  318. Special Theory and String Theory.
  319. Andromeda paradox
  320. Speed of gravity - simple question
  321. Question on Time Dilation Experiment
  322. Time and Tempature question
  323. question about greene's "the fabric of the cosmos"
  324. Doppler shift clarification
  325. Geodesics and stretched strings
  326. movement and spacetime
  327. special relativity problem
  328. Is inertial mass of gas the same as its rest mass
  329. Question on relative time.
  330. Can objects 'fall faster than c' in a gravity field??
  331. invarients for 4-vector quantites.
  332. Einstein's Last Thirty Years
  333. Determined c in S v. Result of the Michelson_Morley Exp.
  334. div G_ab = 0
  335. Does light have mass/weight
  336. E=mc2
  337. anybody got a "light"
  338. Clarification on the consistency of light speed
  339. Absolute Time
  340. Help me through a simple SR problem
  341. Doppler-shift/hubbles-law implies big bang/universe age?
  342. Flat uniform and equivalent
  343. lengths and times relative to S' and S
  344. Question about the rotating disc
  345. Is relativistic effect of length contraction physically "real"?
  346. a strange paradox
  347. Stupider-er Twins Question
  348. Čerenkov radiation
  349. actual and observed time dialation
  350. What kind of math is needed to understand relativity
  351. In what direction does length contraction occur?
  352. Simultaneity Problem
  353. Traversable Wormholes
  354. Can information travel faster than light?
  355. Development of generalized metric
  356. can light have a phase velocity faster than c?
  357. Gravity Wave
  358. absolute simultaneity with Einstein synchronized clocks?
  359. special relativity treatment of gravity?
  360. Tensor Manipulation
  361. special relativity: twin paradox
  362. vacuum solutions
  363. the Michelson-Morley experiment
  364. please explain a little about general and special relativity
  365. Symmetric Twin Paradox(?)
  366. Are relativistic effects "real"?
  367. ON THE ELECTRODYNAMICS OF MOVING BODIES by A.EINSTEIN
  368. twins
  369. Geometry of Minkowski space
  370. light and gravity
  371. relitivistic rocket
  372. spacetime and em
  373. Stupider Twins Question
  374. a link to math
  375. experimental data for..
  376. Nasa
  377. Surface area of the earth
  378. simultaneity and frames
  379. age of universe-speed of light
  380. [SOLVED] light and time
  381. How do relativity explain elliptical orbits of planets?
  382. Fields = mass?
  383. Stupid Twins Question.
  384. perturbing the Schwarzschild metric
  385. redshift question
  386. about the metric tensor
  387. Behaviour of measuring rods...
  388. Why doesn't the universe expand on small scales?
  389. Andromeda Paradox
  390. Palatini form?
  391. Acceleration and twins.
  392. Plase Help Me!
  393. Derivation of E = mc^2
  394. Which is the densest star and how much does it bend light rays?
  395. Does this violate EP?
  396. Preferred Frames not in SR are used in Astrophysics
  397. Simple question on EM field
  398. General Relativity Question
  399. Why do we have red shift and blue shift, and not only one?
  400. Universal expansion velocity SR or GR?
  401. Black Holes For Civilians
  402. GR Tutorial
  403. Time slows at the speed of light
  404. Does acceleration cause time dilation?
  405. invariant "spacetime velocity"
  406. gravity and acceleration
  407. Equation for time dilation.
  408. relativity
  409. about basis vectors
  410. Another impure twin paradox
  411. Which clock is slower?
  412. Principle of equivalence
  413. Question on De Broglie
  414. speed of light in a different medium
  415. inverse twin paradox
  416. basic thing with general relativity
  417. Gravitational redshift and phase velocity
  418. Relativistic Optics
  419. Time and speed of light problem
  420. Bell's Spaceships Paradox explained.
  421. Description of magnetic field in black holes
  422. Curvature Scalar
  423. Train Problem
  424. Speed Of Light
  425. How would the speed of light affect your mass?
  426. Relative to a black hole...
  427. "twins' paradox" and acceleration
  428. What is Meant by Time & Space Being "Continuous"?
  429. loss of simultaneity explained by classical physics
  430. Multiplet paradoxes...
  431. Light Speed
  432. Absolute speed of light conundrum
  433. SR motion, GR motion
  434. 5d Relativity?
  435. Time dilation explanation for gravity?
  436. Wouldn’t time dilation govern a speed limit?
  437. Everything travels at the speed-of-light ?
  438. Alpha Centauri lottery
  439. twin paradox
  440. Relativistic cyclotron frequency
  441. Reconciliation of Maxwell's Equations with Relativity
  442. Criteria for Lorentzian Space or Region
  443. Expanding universe
  444. Another twin paradox variation
  445. Need a physicist's opinion
  446. Can You Travel Faster Than The Speed Of Light?
  447. Question on both Time Dilation and Lorentz Contraction
  448. How can we tell if a given tensor is a curvature tensor?
  449. length contraction and time dilaton
  450. What good is a gravity wave?
  451. Zero Time, Infinite Space?
  452. Singularity Semantics
  453. What are the meaning of monopole character and dipole character?
  454. black hole...?
  455. At what speeds does relativity become noticable?
  456. Time and Relativity
  457. Defintion of Curvature
  458. Time stops at light speed?
  459. ?Strange? interpretation of Time-Dilation and it's implications
  460. Lorentz question II
  461. how does Lorentz transformation manage to maintain the speed of light constant?
  462. 2 body rotating system in GR
  463. How can length contraction of a rod be measured?
  464. Lightwave moving towards/upwards curvature
  465. gauge theories of gravity
  466. Gravity vs Diffraction in Troposphere of a Star
  467. Confining a photon to form a black hole
  468. On the speed of light, accelerate toward mass
  469. Relativistic Doppler Effect notes
  470. Is Lorentz transformation absolute
  471. black hole question
  472. Impure twin's paradox
  473. Field Shift
  474. gravity in R5?
  475. F=ma at light speed
  476. Gravitational Redshift
  477. What do i need to know to move on to the Relativity ?
  478. Pure twin paradox...
  479. newie relativity question: proper time vs. arc length?
  480. Twin (rod) paradox...
  481. Use of covariant derivative in general relativity.
  482. History of special relativity
  483. Gravity Probe B and 'frame dragging'
  484. attaining speed of light
  485. (E,p)(E,-p) What pushes on a scale?
  486. Mathematics prerequisite to that of relativity
  487. Dingle's Dilemma again!!!
  488. Relativistic mass and space-time curvature
  489. Relative velocity and GPS
  490. Scale vs. Balance
  491. RedShift-BlueShift Confusion?
  492. Mass Dialation question
  493. Special Relativity question (from non-physicist)
  494. lol--lol
  495. general relativity question
  496. Is is not that Simple? (about Lorentz transforms)...
  497. Relativistically correct exression for Lorentz force
  498. Relativity on spin particles
  499. Conservation Laws
  500. Particle speed on a relativistic wheel?
  501. What is Physical Significance of "Lorentz Transforms"?
  502. Einstein simultaneity: just a convention?
  503. GPS and relativity
  504. derivation of relativistic acceleration and momentum
  505. CERN, speed of light...
  506. GR and quaternions
  507. Need some help with relativity...
  508. Radial Free Fall Proper Time
  509. Gravity-Why not repulsive?
  510. Does a photon curve space-time, i.e., produce a gravitational field?
  511. Does gravity function as a lens, a prism or both?
  512. energy
  513. Questioning examples often used to introduce the basics of relativity
  514. Can time contract?
  515. Current Sagnac Theory?
  516. Prove that 4 vector potential is really a 4 vector?
  517. Rest Mass?
  518. M&M, Trouton-Noble, Disintegrating Particle, etc
  519. Confused about "Aether"
  520. Aether attached to Earth?
  521. A little geodesic help
  522. time dilation question
  523. again on twin paradox
  524. Sign convention in the space-time 4-vector
  525. Understanding Gravitation
  526. Stumped about GR "contradiction"--help please
  527. photon kinetic energy
  528. Faraday's law of induction and special relativity
  529. Twins Paradox and acceleration
  530. Why c?
  531. What is a null coordinate?
  532. Gravity and bending of light
  533. alternate twin paradox
  534. Divide by zero
  535. relative velocity of third object
  536. Ricci Scalar Problem
  537. GPS and Sagnac effect.
  538. Object's Mass Increasing
  539. Why general relativity and quantum mechanics are incompatible?
  540. Time Dilation a Constant? Space Contraction connection with Dark Energy?
  541. Doppler Effects on Gravity
  542. Horizontal Distortion
  543. speed of gravity
  544. General Relativity as a non-Abelian gauge theory
  545. Einstein's train - When+where does side observer see lightnings to the train rider?
  546. photons stuck in an orbit
  547. Crazy one - photons and time
  548. OK FINE, magnetism is explained away by relativity
  549. particles travelling faster than the speed of light?
  550. non-homogeneous; anisotropic
  551. gravitational wave frequency
  552. Wheeler v. Einstein
  553. Why E=MC2?
  554. Gravitational flux in GR
  555. GR and conservation of energy
  556. lorentz - dont get it
  557. Does a relativistic rolling ball wobble?
  558. Gyroscope experiment
  559. Relativistic wobble?
  560. Retarded time
  561. Force and acceleration
  562. Electron Velocity vs Field Strength?
  563. Calculating the travel time in relativistic travel
  564. Is black hole entropy invariant?
  565. Twins Visualized
  566. who is moving
  567. Another length contraction paradox
  568. gamma in GR
  569. Newbie relativity question
  570. Pervect's discussion re photon/light perspective/reference frame
  571. A falling object
  572. Synchronised Clocks
  573. paticle accelerator in space ship help pls
  574. Orbital Light Speed
  575. Hypothetical spacecrafts traveling at light speed.
  576. am I moving
  577. Combination of Michelson/Morley and Time Dilation
  578. is time, inside an event horizon, time-like or space-like?
  579. differentials - is this valid or just sloppy but right?
  580. General relativity in 1+1 spacetime dimensions
  581. Observation of a black hole
  582. Space Elasticy
  583. General Relativity and the Moon's orbit.
  584. Inertial frames and Parity symmetry
  585. Photon's perspective - we are one photon
  586. What experiments are lined up to test gravity
  587. Can gravity exist without mass?
  588. de Sitter Universe
  589. possible quantum implications of GR?
  590. Relativistic thermodynamics controversy?
  591. A problem with light speed constancy
  592. Local relativity
  593. From The Suns Core to The Corona?
  594. opinion/discussion/advice on a simple thought experiment please
  595. Motivation for tensors in GR
  596. Questions about gravity and curved space
  597. Question about a figure in relativity textbook
  598. Travelling to the Nearest Star and Time Dilation
  599. Lie derivative and Riemann tensor
  600. line element of Schwarzschild
  601. Planck-Einstein Transformation of temperature
  602. accelerating black hole
  603. Do objects actually shrink?
  604. Can galaxies recede from us at velocities greater than c?
  605. two kerr black holes?
  606. Two oposite beams and earth and rocket again
  607. Twin paradox in an empty universe
  608. empty space
  609. GR explanation of Newtonian Phenomena
  610. position of a ship in a new dimension
  611. GR and Dynamical Systems
  612. consistency of the speed of light
  613. SR paradox
  614. Another question about photon perspective, concerning entanglement
  615. Energy momentum tensor of a scalar field by varying the metric
  616. curved space/ spacetime
  617. Transform Mass in energy
  618. The Gauss Bonnet Lagrangian and the conserved current
  619. Time Dilation backfires
  620. Definition of an Inertial Frame
  621. Violation of the EP
  622. Circular Orbits of a Black Hole
  623. faster than the speed of light
  624. A question about invariants
  625. naked singularities
  626. Does relativity work...
  627. QM flux in curved spacetime
  628. wave equation in curved spacetime
  629. Limiting Speed
  630. synchronised clocks anylsis help please?
  631. photon mass destroyed?
  632. Accelerating twice
  633. 4-velocity, the "mass shell" and potential energy
  634. Constructive criticism please.
  635. time dilation analysis help please
  636. Parallel path interaction
  637. thought experiment
  638. Question about 3 momentum
  639. How does an object "know" that it is in motion?
  640. black hole decay
  641. Inertial Reference Frame
  642. What happens to the pythagorean theorem in a non-euclidean space?
  643. Trouton-Noble experiment
  644. Lorentz Violating Field
  645. speed of light question
  646. "Relativity Revisited"
  647. A bench-top test of special relativity ?
  648. what is the motivation of twistor
  649. Atomic clocks & general relativity
  650. the stress energy tensor again
  651. relativistic phase space
  652. Time Dialation analysis
  653. Twin paradox and time dilation.
  654. curved space JesseM
  655. Events and how they are percieved.
  656. spherically symmetric metric in isotropic coordinates ???
  657. Lorentz Factor
  658. space is flat
  659. time dialation
  660. remote Frames of ref
  661. Could i make this clear
  662. photon paths.
  663. Mass question
  664. Looking for a word
  665. Lorentz via rotation
  666. The usage of ct instead of t
  667. The meaning of conical singularity..
  668. amazing thought worth a look
  669. Magnetic Field Lines/Location in space
  670. Long planet and Galileo thought experiment
  671. non-maximally extended universes
  672. Blind man's Relativity
  673. Michaelson Morely
  674. How to measure absolute velocity
  675. Does a black hole cause light to move faster?
  676. What is light?
  677. Why is gravitational mass the same as inertial mass?
  678. twin paradox
  679. How old is my twin brother?
  680. A question on special relativity
  681. is the universe bounded?
  682. Basic math operations on 4-vectors
  683. Lorentz invariance and General Coordinate transformations
  684. discrete precursor of stress-energy tensor
  685. "No-Interaction" Theorem
  686. A silly question ?
  687. Question on SR
  688. parabolic trig for Newtonian space-time?
  689. The Ehrenfest Paradox
  690. ct dimension
  691. Synchronised clocks
  692. gravity and EM
  693. Does GR say anything about solid angle deficit?
  694. t of t' and x of x' with respect to S
  695. My response to an anti-relativist
  696. momentum in the time direction
  697. If i had a micro black hole..
  698. photons, mass, momentum
  699. Does light have gravity?
  700. stationary and moving clocks
  701. Zero reference
  702. Question on Effective Potential
  703. Why is the speed of light the same to any observer?
  704. energy, heat and speed
  705. an inverse relativity problem
  706. length contraction v. time dilation
  707. A question regarding length contraction
  708. not to defend Phrak, but i have a related question...
  709. A question about E=mc^2
  710. Can energy be converted into mass?
  711. Puzzling Question
  712. Light Speed Travel and Causality
  713. How Does a Clock Measure Time?
  714. Does Thomas Precession violate angular momentum conservation?
  715. Classical Gravity versus GR
  716. A Myth about Black Holes
  717. Effect of gravitational potential on energy
  718. where GR doesn't work.
  719. Size of a black hole?
  720. BKL Conjecture
  721. GR and QM conflict
  722. Maximum speed of anything, temperature
  723. the Lorentz Group in General Relativity
  724. Newton's Bucket
  725. Does a dimension have dimensions?
  726. Deriving gravitational redshift using the energy change approach...
  727. unanswered in class
  728. Magnetism and Relativity
  729. Q
  730. Mass transfer between black holes
  731. Gravity: real force or artefact of acceleration?
  732. So what has happened to the GPE (Gravitational Potential Energy)?
  733. More Spacecraft Velocity Anomalies
  734. Meaning of diffeomorphism invariance?
  735. Ricci tensor equals a constant times the metric
  736. Time Dilation. I don't get it!
  737. Is light travel time for event time calculation usually implicit?
  738. Relativistic heat force.
  739. Blackholes light gravity
  740. What's wrong with Michelson's explanation of ether dragging?
  741. twins paradox confusion
  742. Show that ds^2 = ds'^2
  743. Geodesic deviation equation
  744. Locality, Time, Speed, Distance, and one confused person.
  745. deflection angle of a ray grazing the sun
  746. Does a photon age?
  747. Time dilation
  748. does gravity move off?
  749. A hypothetical question
  750. bending of light?
  751. tough relativity problem
  752. Einstein - 1911 paper
  753. The physical nature of spacetime
  754. Why the light speed is aprox. 300,000 kms/second?
  755. The Nature of Time?
  756. Time and Gravity
  757. about the Einstein tensor
  758. What does a clock measure?
  759. Curvature of Time?
  760. transformation
  761. Revisiting the lesson of the "Relativity of Simultaneity"
  762. Maxwell vs Newton
  763. Doppler Effect and absolute simultaneity
  764. Did Einstein "guess" the time-dilation equation?
  765. Derivative of the metric tensor
  766. Energy-Momentum Tensor
  767. General Coordinate transfos vs Lorentz transfos in GR
  768. Why do people insist on the graviton..
  769. Confusion about signal latency vs true relativity
  770. Energy-momentum...
  771. Absolute acceleration?
  772. Relativity Questions
  773. Where does the energy go?
  774. A concept of Relativity
  775. Two questions about the ADM formalism
  776. Speed of light.
  777. hypothesis about speed of light
  778. How infinite does time get by gamma....
  779. Gravitational Waves in other dimensions
  780. Coupling spinors to gravity
  781. Quick Notation Question
  782. Rotating Spacetime - a question
  783. Help with Space-time Bend.
  784. Interesting new take on gravitation?
  785. SR/GR Space-Time
  786. absolute simultaneity
  787. A question concerning the lorentz transformation derivation
  788. Understanding Time and Space as One entity.
  789. Computational GR
  790. Help in deriving the pair of singularities in an Einstein-Rosen bridge.
  791. General Relativity
  792. Show Lorentz invariance for Euler-Lagrange's equations- how?
  793. Is relativity a gauge theory?
  794. Question on Special Relativity.
  795. Is the GR self-contradicting?
  796. GR explanation of Newtonian Phenomena
  797. traveling into the future in order to travel back into the past
  798. parallel transport approximation
  799. Violations of Causality
  800. Curvature inside a cavity
  801. Time dilation derivation
  802. Schwarzschild in 5D
  803. A noob question about relativity.
  804. derivative of metric and log identity
  805. Mass increase
  806. Why does light have invarient speed?
  807. Plotting space-time curvatures as curved 2D-surfaces
  808. elapsed time on accelerating clock
  809. Relative Motion, a confusion!
  810. Gravity, cause or effect of time dilation?
  811. Help with showing the existance of the Schwarzschild singularity at r=0.
  812. Units, Relativistic Momentum
  813. How close to light speed can you theoretically get?
  814. Are the the gravitational mass and the inertia of the sun the same?
  815. Massive objects moving too fast
  816. Adjoint of functional derivative in superspace
  817. Noob with a question about lightspeed travel.
  818. speed of light
  819. Information for the uninformed
  820. Spinning Singularities?
  821. Aether attached to earth
  822. Coordinate acceleration without a Force !!!!!!!!
  823. Deriving the line element in homogenous isotropic space
  824. Black hole existence
  825. Clarification of Terminology - GR Stress-Energy Tensor
  826. Finding required energy
  827. Simple problem driving me nuts :-)
  828. SR and a train
  829. ct axis??
  830. Colliding rotating black holes
  831. Can information travel faster than light?
  832. conventionality and clock symchrnization
  833. Kerr
  834. The 4th Dimension.
  835. Rotating rocket experiment
  836. Simple Question
  837. Local acceleration experienced by observer
  838. Angular momentum
  839. Question about Sticky
  840. energy-mom tensor of charged dust (homogeneous and isotropic)
  841. relativity effects on photons
  842. light moves at C from all frames of references?
  843. non-standard clock synchronization
  844. Deriving Law of Conservation of Energy from E=MC2
  845. speed of light
  846. Please be gentle to a layman
  847. Help! Deriving formula for Einstein Radius
  848. Radial geodesic distance with Schwarzschild's solution
  849. Proper time of accelerated clocks
  850. Dustparticles and geodesics
  851. Size of an inertial frame
  852. Help with explaining why BigBang was not a Black Hole to High School physics students
  853. Detecting absolute motion?
  854. Emission/Absorption
  855. I have 2 questions about relativity
  856. line element on a torus
  857. Reverse-tracing Einstein's field equation
  858. paraboloid problem
  859. Black holes and the time issue
  860. Spherical shell in 2-space
  861. The synchronization procedure
  862. Relativistic Aberration?
  863. help with wording my thoughts
  864. Poincaré's 1900 paper on Lorentz's theory
  865. Radius of a black hole
  866. Speed of Light question
  867. grtensor tutorials
  868. The light clock and time dilation.
  869. Tethered to the Moon
  870. Traveling faster than the speed of light?
  871. Special Relativity, 2nd postulate, and a dilemma
  872. contravariant derivative?
  873. Disgruntled observer
  874. Spacetime transformations or not?
  875. why???
  876. Question about relativity
  877. On Lorentz transform.
  878. question on traveling spaceships
  879. blackholes and planets
  880. from Lorentz transformatios to Bondi's approach
  881. Beyond the Twin Paradox
  882. Climbing out of a Black Hole?
  883. Waves in GR
  884. Torsion in GR
  885. On Pressure/Gravity/The Expanding Universe
  886. Rotational reference frames
  887. Simultaneity
  888. why R-1/2gR
  889. Can you actually measure an object's velocity?
  890. Does pressure resist acceleration?
  891. Falloff behaviour of light vs gravitation
  892. Q about the spacetime bending
  893. Time dilation for Dummies
  894. Einstein's ultimate conclusion regarding ether and Relativity?
  895. speeds in space
  896. Name of the topic
  897. Schwarzschild Metric
  898. Wormholes
  899. Atomic clocks and relativity
  900. Lorentz interval
  901. Proof of invariance of gas pressure
  902. Help me get modern please?
  903. curl in GR
  904. No seriously; Can we, maybe, go to the past?
  905. Stress Energy Tensor
  906. Nature of Spacetime
  907. Does time stands still at c? And is room a point then?
  908. Space without time?
  909. A laser time machine
  910. Cosmological constant as a perfect fluid
  911. Affects of gravity on oxygen
  912. Twin Paradox Content
  913. From Geometry to Kinematics
  914. Question about Relativity and the apparent direction of light
  915. Plot a point on Earth through the Universe
  916. Why all at around the same time?
  917. Differences between Lorentz scalars and Lorentz invariants
  918. Q about relativistic mass increase, starship
  919. Basic Q about Relativity
  920. space-time transformations with different shape
  921. how does photon gain its speed in no time?
  922. conformal transformations and the Einstein frame
  923. Relativity Concerning Small Particles
  924. How does a photon's event horizon look like?
  925. Tachyons and photons
  926. annals of physics
  927. is this a suitable explanation of relativity?
  928. the twins in a big circle
  929. The Equivalence Principle
  930. “Two-spaceship paradox” This solution incorrect
  931. What happens to time when gravity is absent
  932. Why nothing is observed going back in time
  933. Observed Time vs Observed Duration
  934. Preferred Coordinates
  935. Portal Discussion: Human at Speed of Light
  936. could general relativity be right simply because it explains gravity?
  937. Does time pass for photons?
  938. Tachyons travel backward in time?
  939. Typical speed
  940. x' relative to S' and relative to S
  941. Is it not possible to travel in light speed?
  942. A question about relativity theory?
  943. GR and Curvature
  944. Relativity and my Intergalactic Space Race...
  945. Lorentz contraction of box filled with gas
  946. Time, entropy and relativity
  947. einstein began looking for gravity in the electromagnetic waves
  948. Problems in General Relativity
  949. simulation: ray of light near black hole
  950. Light V/S non EM wave.
  951. Faster than light.
  952. Thought experiment revisited
  953. My Black Holes brainteaser
  954. Does c change in this case?
  955. the Lorentz group generator
  956. phase invariance of e.m. waves
  957. Relative Time
  958. General Relativity Papers
  959. relativistic terminology
  960. contraction of riemann tensor
  961. Twin paradox
  962. Light speed paradox?
  963. stress energy tensor for rotating disc
  964. Time Dilation and space missions
  965. Hamilton in GR
  966. If light has no mass, how can it have energy according to e=mc2?
  967. Thoughts (of an amateur) on the Solution to the Twin Paradox
  968. Increase of mass and legth contracts with speed?
  969. length contraction derivation
  970. Gravitational Wave Rocket
  971. from one space dimension to two space dimensions in special relativity
  972. Falling into a Black Hole
  973. Velocity transformation
  974. Where does time travel fastest? And a moving galaxy/light speed question.
  975. Gravitational Self-Interaction
  976. Q On Lorentz Factor
  977. How is time and space affected by the warps in General Relativity?
  978. Kinetic Energy and Wormholes
  979. Does a sphere remain a sphere
  980. Relativistic Thermodynamics
  981. Relativity Stumper for you Einsteins
  982. postulate and special relativity
  983. Gravity vs. Acceleration
  984. Twin Paradox
  985. Special relativity review
  986. lorentz transformation
  987. Gravitomagnetism?
  988. Axiomatizing relativity
  989. Kerr solution as complex transformation
  990. Photon's frame of reference
  991. Light has been bugging me.
  992. A new angle on the Right Angle Lever Paradox.
  993. Problem with thought experiment
  994. A new veiw on gravity
  995. What is gravity?
  996. Time Dilation
  997. lorentz contraction from space-time interval invariance
  998. Video lectures on GR?
  999. relativistic velocity derivation under constant force
  1000. Energy in relation to space and time
  1001. Is gravity a force?
  1002. Gravity Wells
  1003. Current status of gravitational collapse (full quantum mechanical treatment).
  1004. terminology problem
  1005. Lost sleep on this question...
  1006. Schwarzschild solution and Machian variable G
  1007. Is the direction of a pulse from a laser pen dependent on the observer?
  1008. Math of an accelerating spaceship
  1009. when the revolution of the earth on its axis accelerates
  1010. Space-time Fabric: how what and why it warps?
  1011. FAQ: Experimental Basis of Special Relativity
  1012. time slows down when you approach the speed of light?
  1013. Must measurement of time reference light?
  1014. Why does light have invarient speed?
  1015. black hole
  1016. About the 4 potential
  1017. space-time interval question
  1018. The Twin Paradox Paradox.
  1019. Relativity paradox!
  1020. Puzzled by light???
  1021. Relative speeds
  1022. A Question About Special Relativity's Basics
  1023. Just how many different theories of gravity are there?
  1024. Force propagation and length contraction
  1025. Layman Needing Research Info...
  1026. Educational value of spacetime diagrams
  1027. Stationary axisymmetric spacetime
  1028. Is space curvature misleading?
  1029. Problem with equivalence principle.
  1030. Restrictions on Riemann components
  1031. Regarding the conversion of kinetic energy to mass
  1032. scanned relativity books on the internet
  1033. General Relativity: gravitational waves
  1034. The twins paradox and explanation
  1035. Uniform Acceleration and Gravity (again)
  1036. clock synchronization
  1037. Time dilation and the photon clock
  1038. Newtonian perturbations to Minkowski
  1039. Simultaneity in Relativity: self-contradictory?
  1040. Gravitational mass
  1041. Dark Matter and Velocity
  1042. ergosphere questions
  1043. The Schwarzschild metric...
  1044. c / speed of light
  1045. another question on black hole
  1046. Photon-Electron collision problem
  1047. Lambda Warp Drive....
  1048. Newtonian limit of LCDM
  1049. blackhole speed question.
  1050. e=mc^2 in 1,2,3,5,6... dimentions?
  1051. Mach's Principle and Equivalence
  1052. Following Schwartz's argument re: measuring (g-2)
  1053. Galilean vs Lorentz transformation equations
  1054. Exotic matter
  1055. Rotating Space Station
  1056. How do we know that gravity is an attractive force?
  1057. Special Relativity and GPS
  1058. Mass of a Rotating Cylinder
  1059. Modified gravitation ; how to make it relativistic ?
  1060. What is general covariance?
  1061. schwarzschild de sitter solution
  1062. kinetic theory in general relativity
  1063. Free fall coordinates in Schwarzschild?
  1064. Is the Loedel Diagram a Special Case of the Minkowski Spacetime Diagram?
  1065. De Sitter relativity and Lorentz contraction
  1066. Relativistic wheel and orbit connection?
  1067. Does a Black Hole Ever Collapse?
  1068. EINSTEIN-VLASLOV EQUATION (to chriss HILMAN or anyone else who cares)
  1069. Time dilation question
  1070. Could moving observer be stationary vs moving and still give Albert the same results
  1071. Cooperstock &Tieu's most recent paper
  1072. Newtonian limit of GR
  1073. Constant Acceleration seen in an inertial frame
  1074. radiation around spherical object
  1075. einstein/ michelson-morely
  1076. Closing door paradox?
  1077. Lorentz Transform in Non-Minkowski Spaces
  1078. General relativity concept
  1079. The spreading stain
  1080. 2 Masses accelerating to eachother
  1081. My 9-year-old son has a physics questions that I couldn't answer...
  1082. Length contraction.
  1083. simultaneity check
  1084. which solutions of GR are experimentally tested
  1085. Geodesic applied to twins paradox
  1086. Linearized gravity / Linearized Einstein Field Equations / GEM
  1087. Derivation of Lorentz Transformation
  1088. Software to vary the Action
  1089. Spinning disc
  1090. Where do CTCs go?
  1091. homogeneity and isotropy
  1092. Tidal Effects of Non-Uniform Gravitational Fields in Free-falling Coaches
  1093. Light through a medium
  1094. Derivation of the Teukolsky Equation
  1095. could a moving object become a black hole?
  1096. Time Travel
  1097. Doubt on FRAME of REF(Its killing me!!!!!!Help)
  1098. Topology of closed timelike curves (CTC)
  1099. Is Einstein's etheric model of GR compatible with modern physics?
  1100. When a photon is absorbed
  1101. speed of light in a medium
  1102. time dilation
  1103. Topology outside vs inside black hole
  1104. photon emmission
  1105. Why the metric is covariantly constant?
  1106. Faster than light
  1107. 4-vectors and the like
  1108. Infinite energy, light speed.
  1109. Gravity/conservation of energy?
  1110. Brightness
  1111. A question for relativists
  1112. Speed of light limitation
  1113. why torsion free metric compatible connection ???
  1114. EFE in empty space
  1115. equivalence principle
  1116. Modelling Einstein's Thought Experiments (Trains + Mirrors)
  1117. Crackpot argument on Physicsforums gets published!?
  1118. tick tick tick tick boom
  1119. can somebody read this and tell me the flaw in the argument?
  1120. GR and acceleration
  1121. Question on Curvature of Space
  1122. Apparent position and light travel time
  1123. a limit problem in SR
  1124. time dialtion tick tick skeptick
  1125. Einstein's papers translated to english?
  1126. Relativity, the flow of time and speed
  1127. Interaction of 2 black holes
  1128. Question about events inside black holes
  1129. Hubbles Law violates c?
  1130. Upper Limit of Acceleration?
  1131. Boosting the potential
  1132. Speed of light
  1133. a question with the readings of synchronized clocks
  1134. what is the nature of gravity constant?
  1135. Relativistic Lagrangian
  1136. Looking for complete explanation of logic behind relativity
  1137. Special Relativity, Existence, and Big Bang
  1138. lorentz transformation active or passive?
  1139. About the validity of Einstein’s 1905 Principle of Relativity
  1140. Peering into the heart of a black hole
  1141. What does curvature of spacetime really mean?
  1142. speed's influence on space time
  1143. invariance of combinations of physical quantities
  1144. Speed of Light
  1145. Paper discussing the mathematics of relativity
  1146. I have a question on motion!
  1147. Does a gravitational field have mass?
  1148. Slowing Down a Photon
  1149. Galileo's experiment and Equivalence Principle
  1150. Speed/Aging Theory
  1151. Time dilation, length contraction
  1152. Maxwell's equations in higher dimensions.
  1153. DEC with E/M and scalar fields
  1154. SR problem..
  1155. Black Holes
  1156. Flat-space picture of gravity vs. General Relativity
  1157. Orbital Velocity at r=3M?
  1158. Relativistic Paradox
  1159. Does kinetic energy vary by frame of reference?
  1160. limit to strength of electron magnetic field
  1161. research on general relativity!
  1162. Chasing a beam of light
  1163. Thermodynamics and Relativity: observing gases, rel. effects
  1164. de broglie and light
  1165. Theories of gravity
  1166. manifolds
  1167. Maths and high speed
  1168. Speed of Light vs Light Years
  1169. Constraints on metric coefficients in General Relativity (GR)
  1170. Total energy/mass in stationary GR
  1171. Where is the mistake?
  1172. GPS clocks
  1173. Relativity and Electromagnetism
  1174. If such an object does exists...
  1175. Wormholes, parallel universes, negative mass
  1176. relativity software package
  1177. Speed of Light and the Causality Problem
  1178. On the Notations of Length Contraction and Time Dilation
  1179. Magnets (and other things) at the speed of light
  1180. Question about going faster than speed of light
  1181. relativistic mechanical index of refraction
  1182. relativistic effects
  1183. Light in other medium
  1184. relativistic rockets
  1185. Energy of light
  1186. Relativity Help
  1187. Relativity Express
  1188. Information traveling faster than light?
  1189. How much research is left to do in the differential geometry/topology aspect of GR?
  1190. Light Question
  1191. E=mc2 without SR
  1192. christoffell symbols
  1193. Twin Paradox Simplified
  1194. photon questions
  1195. Lorentz invariance..
  1196. Any good suggestions on SR/GR
  1197. Near light angular momentum
  1198. General newbie questions regarding the speed of light
  1199. Koide and Kodama on relativistic brownian motion
  1200. Twin Paradox
  1201. Gravity: real force or artefact of acceleration?
  1202. Frame dragging effects on speed of light
  1203. Dude, where's my anti-graviton?
  1204. Polchinski's paradox
  1205. Shapiro time delay?
  1206. c independent of observer and emitter
  1207. Gravity For The Masses website
  1208. Center of the Universe
  1209. Rest mass
  1210. How would you observe outside events on a spacecraft?
  1211. Lorentz boost for electron
  1212. Schwarzchild solution and orbit precession
  1213. About the Non-paradoxicality of the Twin Paradox
  1214. energy, heat, and relativity
  1215. Thought Experiment on ToR postulate-1
  1216. information theory+relativity
  1217. High Energy Gamma Rays Go Slower Than the Speed of Light?
  1218. SR postulates
  1219. Inertial System
  1220. Special Relativity GRE Question
  1221. Standing waves in GR
  1222. Gravity and Photon
  1223. Special relativity - observing spinning objects
  1224. How to get inverse Lorentz tranformation from "direct" Lorentz transformation
  1225. Everything has a reason
  1226. Invariant Spacetime Interval
  1227. a question
  1228. Relativistic De Broglie Relation
  1229. Derivation of Lorentz Transformation
  1230. simple lorentz trans. question
  1231. Special Relativity & Light
  1232. Relativistic orbiting
  1233. Electric field and gravitational field
  1234. Why doesn't DEceleration add mass as well?
  1235. Help with a thought experiment.
  1236. Speed of light - can it be exceeded?
  1237. silly question about special relativity
  1238. Relative Twin Tango
  1239. reference frames for photon collisions
  1240. The classical aether vs. the modern vacuum
  1241. Is there something special about standing on a planet?
  1242. relativistic centripetal force
  1243. another qn about light
  1244. changing of one of the previous topics
  1245. What kind of a bomb? answer:the exploding kind.
  1246. Confused by time dilation!!
  1247. the runner on the train paradox.
  1248. Group velocity and speed of information
  1249. Special relativity & length contraction
  1250. Raindrops and Gravity
  1251. Tensors: Lorentz vs Galilean invariance
  1252. A trivial question
  1253. Electric / magnetic field transformations
  1254. gravity with a mass current
  1255. Inertial dependence upon local matter
  1256. Why can't a photon exceed the speed of light?
  1257. Distance to Light
  1258. experimental proofs of increaseof mass with v
  1259. Center of inertia?
  1260. Michelson- Morley's experiment
  1261. the best theory ever
  1262. The Origins of the Universe?
  1263. Event horizon of a Black Hole
  1264. robertson-walker metric
  1265. How Do We Know Gravity Is A Force?
  1266. need a little help please
  1267. Dr. Robert Forward's curvature gradient detector
  1268. Clocks in gravitational field
  1269. Can someone give me a good plausible answer
  1270. Thought Experiment - Measuring speed of light
  1271. Approximation of the FE feat. "loose notation"
  1272. Phantastic Photons
  1273. Speeding up time?
  1274. speed of light
  1275. How to measure the lack of external force during free fall?
  1276. Infinite Acceleration
  1277. Does the shape of the curve, that is produced in space by a mass, have a name ?
  1278. Twin Paradox
  1279. speed of photons inside a very powerful gravitational wave
  1280. simple question about the lorentz transformation
  1281. how relative is inertia ?
  1282. Question on Relativity.
  1283. Dark Energy as a Gravitational Field?
  1284. What is speed?
  1285. How much does the universe weigh?
  1286. Time gap between explosions in moving frame of reference
  1287. please tell me why i'm wrong...
  1288. Does the sum of the mass of two bodies vary with the distance between them ?
  1289. Universe expansion
  1290. Frequency and C
  1291. when sun is gone, gravity of light, which one faster?
  1292. Gradients in the curvature of space-time
  1293. Gravity ficticuous force because it's relative to mass?
  1294. speed of wave
  1295. Causal paradoxes - how to solve them?
  1296. who brought up the idea of a black hole at planck length?
  1297. Photon acceleration
  1298. What do you make of this?
  1299. On the way to showing that LT is linear
  1300. Superconductors and Gravitomagnetism
  1301. Special Relativity
  1302. Space time curvature
  1303. S.R Question.
  1304. Variations, Euler-Lagrange, and Stokes
  1305. what is the gauge group of general relativity?
  1306. lorentz transformation
  1307. Simple Lorentz transformation. Are there objections
  1308. Time dilation
  1309. Spacetime -- it warps, it curves, but can't expand??
  1310. Verification of the Lorentz contraction of the space
  1311. Relavistic Length
  1312. Direction of Gravitomagnetism
  1313. Is the speed of light constant?
  1314. Hyperelasticity and the relativistic Lagrangian of a 1-dimensional rod
  1315. photons and gravity
  1316. Time-like curves
  1317. wormhole and relative motion
  1318. Symmetry in Travel and Time Dilation
  1319. local coordinates, physical coordinates
  1320. Time Dilation and Aging?
  1321. direct and inverse Lorentz transformation
  1322. EFE simulation
  1323. Hooke's law and SR
  1324. Modified Twin Paradox. (Experts required).
  1325. help: Lorentz transformations with and without thought experiments
  1326. general relativity vs quantum field theory
  1327. General formula for space-time distortion?
  1328. stress energy tensor
  1329. Just from personal study, is this possible?
  1330. Time and Time again.
  1331. Midframe Lemma?
  1332. Yet another spaceship thought experiment
  1333. curved space-time observed and confirmed
  1334. Understanding Special Relativity
  1335. Magnetic field, frames of reference ...
  1336. Surely k-calculus kT is 'mixing units'
  1337. Time dilation on accelerated reference frames
  1338. Speed of Light and Black holes
  1339. confused about gravitaional time dilation math
  1340. 3d simulation of special relativity
  1341. Light faster than light?
  1342. Another question on time dilation
  1343. electromagnetism with unsteady boundaries
  1344. heres a question plz see if anyone could help me with this
  1345. Help! Historical evolution of understanding of SR
  1346. SR predictions on an recent microwave experiement
  1347. invariance of c and clock synchronization
  1348. Poincare transform
  1349. GRAVITY can BIND LIGHT?
  1350. accelerated frames in SR
  1351. Derivation Of Lorentz Transformation by Lawden
  1352. moment of inertia corrected with relativity
  1353. Time dilation and the mind.
  1354. Time Travel Machine Outlined
  1355. Penrose Lecture
  1356. do tachyons exist!!
  1357. is light speed fixed?
  1358. four momentum of a field
  1359. Researchers create gravity in lab experiment
  1360. Looking for something interesting..
  1361. Scientists claims light speed barrier broken
  1362. A short relativistic story but what is its moral?
  1363. pertinence of relativity of simultaneity
  1364. spacetime interval of zero
  1365. Faster than the speed of light??
  1366. Constant Velocity
  1367. Noobish question on time dilation!
  1368. Lorentz's Derivation
  1369. Addition of velocities: What actually happens?
  1370. Relativity Visualized
  1371. The Inertia of Stress
  1372. Time dilation???
  1373. standard derivation??
  1374. relative speed of tachyons greater than c?
  1375. time dilation
  1376. Lorentz Transformation
  1377. spacelike travel?
  1378. GR as a Gauge theory ??
  1379. time like space like
  1380. Speed of light relative to universe expansion?
  1381. Photon beyond light speed?(?tachyon?)
  1382. clock readings lorentz transformation
  1383. rotating rod
  1384. Wormholes: Are they practical?
  1385. reducing the time invested in teaching SR
  1386. throwing a string into a blackhole
  1387. Is expansion of space relative?
  1388. Light under light gravitational force
  1389. Is energy conserved in an expanding universe?
  1390. Coordinate speed of light vs. gravitational time dilation?
  1391. Rotating Disk
  1392. Need a little help on special relativity.
  1393. energy-momentum density of point particle
  1394. lorentz transformation
  1395. Does motion break existing symmetries?
  1396. electromagnetic wave propagation
  1397. accelerating frame in special relativity
  1398. Considering Relative Simultaneity - Relying on clocks instead of observers
  1399. Empty space is something?
  1400. Basic problem
  1401. transformation of three-force
  1402. time & space
  1403. Magnetism
  1404. Are gravitational "fields" additive?
  1405. Non-rest mass, is it real?
  1406. Evidence of Equivalence?
  1407. How Far Can Gravity Reach?
  1408. clock synchronization problem
  1409. Special Frames and Sci-Fi
  1410. Swartzchild metric and free fall
  1411. Pythorean Theorem and General Relativity
  1412. accelerated frames
  1413. are causes relative?
  1414. spacetime diagrams.
  1415. is time in essence - constant?
  1416. length contraction from two inertial frames
  1417. Dark Energy Interation With Gravity?
  1418. Can we travel faster than the speed of light?
  1419. How can "empty space" expand? (Reality behind the GR equations.)
  1420. Relativity Theory: What is needed?
  1421. SR from GR
  1422. two body problem in Gr
  1423. Angle independence of Michelson-Morley type experiments
  1424. special relativity puzzle
  1425. Velocity...
  1426. Does black hole's gravity really travel out of it's own Event Horizon?
  1427. buchdal's theorem
  1428. transformation of epsilon and miu
  1429. How does one construct the action which gives the equation of motion?
  1430. The GPS paradox
  1431. conflict between electrodynamics and classical relativity?
  1432. Relative speed of a photon - mk2
  1433. Length (and Mass) vs. Time Dilation
  1434. Does a gravitational field have mass?
  1435. anomalous refractive index? How doesnt this defie relativity
  1436. Please save me from my idiocy
  1437. No such thing as a stupid question, just stupid..
  1438. Nothing can travel faster than light
  1439. Einstein Group
  1440. relativistic thermodynamics problem
  1441. nature of time
  1442. Moving throuh Spacetime
  1443. when is a derivation of the Lorentz transformation "good"
  1444. NYT article about the speed of shadow > c
  1445. Can Fermat's principle be applied to gravitational lensing?
  1446. laws of physics
  1447. Matter tensor
  1448. gravitational polarity, called antigravity
  1449. GR Approximation for PSR 1913+16
  1450. Time as a dimension
  1451. What's the G-forces in a black hole event horizon?
  1452. detonator paradox
  1453. Same old twin paradox
  1454. Can't be a 'preferred' frame.
  1455. Synchrotron Radiation
  1456. does light have its own gravity field?
  1457. The Ball is There!
  1458. Lorentz Transformations
  1459. doppler effect / expanding universe . trouble uniting both concepts???
  1460. associated photon
  1461. Why objects with different mass fall with same velocity??
  1462. how can a black hole be created, any model
  1463. speed of shadows
  1464. Approaching a Black Hole
  1465. Bulb problem
  1466. Why black holes can have static electric fields???
  1467. Correct My Misunderstanding of Special Relativity
  1468. Mass and Velocity
  1469. Stress-Energy
  1470. einstein was wrong?
  1471. *pervect - Local Lorentz Frame
  1472. non-linear transformations for dummies
  1473. electromagnetic wave in media
  1474. SL(2,C) etc
  1475. Q? - Relativistic Mass
  1476. particles collisions at speeds greater than c :surprised
  1477. Thought Question
  1478. experimental verification
  1479. GR explanation of Newtonian Phenomena
  1480. I have a question...
  1481. About the so-call "two errors (mistakes)" in Misner-Thorne-Wheeler
  1482. stress-energy tensor and pressure
  1483. No width contraction in Michelson Morley Experiment, why?
  1484. photon gas and relativity
  1485. How did Maxwell build his theory
  1486. Roy Kerr on the Kerr vacuum
  1487. Speed of light
  1488. My SR Document
  1489. invariant and covariant in special relativity
  1490. Relativity in simple
  1491. a quick question of light
  1492. Aging related to speed of the Earth
  1493. Constant Acceleration
  1494. Black holes and entropy: energy with respect to infinity
  1495. The Claim: "Gravitation is acceleration."
  1496. Basics: Speed
  1497. energy momentum tensor for entangled system
  1498. I am attempting a condition where Newton and Einstein agree
  1499. why c=1 in relativistic equations
  1500. Was Einstein wrong?
  1501. Why Light?
  1502. time dilation in plain english
  1503. gr-qc/921001 - the constraint algebra of general relativity
  1504. Orbital Mechanics
  1505. I have devised away to travel Faster Than Light
  1506. Einstein-Strauss solution with one or two bubbles
  1507. Curvature inside a cavity
  1508. Theory of Everything
  1509. Speed of light while chasing after it
  1510. Black hole Vs Light
  1511. schwarzchild solution with cosmological constant
  1512. Apparent superluminal velocity of galaxies
  1513. Physical Intuition
  1514. Question about deflection of light test
  1515. Do light and gravity take identical geodesics?
  1516. trying to wrap my pea sized brain around the universe.
  1517. Energy-mom tensor does not determine curvature tensor uniquely ???
  1518. Questions about GR
  1519. Questions about motion equations
  1520. Can space-time curvature be applied to artificial satellites.
  1521. SR Confusion!
  1522. Static black holes defy theory
  1523. Length of time
  1524. Light shone in a train bouncing off mirrors
  1525. Time does not run slower or faster
  1526. Smolin's in depth perspective on Einstein, man and mind (NYRB)
  1527. Fundamental identity of SR valid in GR?
  1528. Simple Kaluza Klein question
  1529. From the scalar of curvature (Newman-Penrose formalism) to the Ricci scalar
  1530. time dilation without acceleration
  1531. Proof of mass dilation
  1532. time dilation... thx!
  1533. General Relativity for Dummies
  1534. Light mass?
  1535. Complex four vector algebra in relativity
  1536. Please help me understand SR
  1537. what's wrong with this?
  1538. New to Relativity Theory.
  1539. Sign of Metric
  1540. time dilation
  1541. Nothing can exceed the speed of light
  1542. mass of a system of two photons
  1543. time travel
  1544. Renormalized energy momentum tensor in Milne spacetime
  1545. time dilation
  1546. Cauchy surface
  1547. What is the Theory of Elasticity?
  1548. Very simple relativity questions
  1549. Acceleration of a point mass
  1550. flow of time
  1551. How to survive in a black hole: Myth Debunked
  1552. Canadian PM a Geodesic Deviant?
  1553. Speed of light in the universe, experimental data
  1554. Confused in basic SR
  1555. Geodesic
  1556. gr vs. newtonian orbits
  1557. Lorentz-Fitzgerald Contraction or Time Dilation?
  1558. Observing backwards time?
  1559. Lightspeed not constant?
  1560. Light reaction
  1561. Non-relativistic derivation of Schwarzschild's equation
  1562. Calculating distance between two points in potential
  1563. Light, Elevators and Gravity
  1564. Quick beginer question
  1565. Need mental picture
  1566. parametric equations for geodesics
  1567. Galileo
  1568. Question on advance of perihelion.
  1569. Physics Articles - sr, gr etc
  1570. particle production in curved spacetime
  1571. time as a function of distance for constant a
  1572. Static vs Stationary?
  1573. f=ma in relativistic terms
  1574. Blackholes
  1575. question about the weak field approximation
  1576. About interpretations and logic...
  1577. Professionally researched relativistic orbits
  1578. what do they do in numerical GR ?
  1579. any films about relativity?
  1580. Light Speed Relativity
  1581. Hi, can't find the way to debunk this...
  1582. Snell's Law
  1583. What's the ratio?
  1584. Connection of General relativity and geometric Refraction of light
  1585. Geodesics between two points ?
  1586. question about the energy momentum tensor
  1587. Vacuum solutions
  1588. Looking out the window of a fast ship
  1589. A question about a relativity light clock
  1590. How is 3-space curved without a fourth spatial dimension?
  1591. Frame fields vs. Coordinate bases
  1592. Liftetime of photons in matter
  1593. Ticking clocks
  1594. Some short questions about mathematics
  1595. Rotating black holes
  1596. Which direction did they measure a meter?
  1597. Train question.
  1598. Lorentz Factor - Help!
  1599. Relationship between E=mc^2 and gravity
  1600. General Relativity vs Newtonian Mechanics
  1601. Stress-energy tensor of a wire under stress
  1602. What is it about speed that affects time?
  1603. Time in GR
  1604. Hawking-Penrose 1994 Debate
  1605. einstein hilbert action
  1606. Relativity of Acceleration
  1607. What is one full orbit
  1608. Time Dilation
  1609. Question About Speed of Light and Energy
  1610. Death by black hole
  1611. Does gravitational waves participate in gravitation interaction??
  1612. practical meaning of simultaneity calculations?
  1613. Gravitomagnetism and acceleration
  1614. Photoelectric effect and SR
  1615. Some simple minded aspects of gravity
  1616. temperature and speed of clocks
  1617. Original motivations for GR??
  1618. velocity transformation
  1619. Photon wavelength in expanding universe
  1620. The moon
  1621. Observing an astronaut falling into a black hole
  1622. General covariance
  1623. Gps
  1624. SR, GR and Twin Paradox
  1625. Behaviour of light
  1626. Spacetime, the Universe, the Present and the Future
  1627. Relativistic invariance
  1628. The Whittaker metric
  1629. clock synchronization problem
  1630. tensor pertubration: Hello to everyone
  1631. A question about general relativity ?
  1632. Why is the speed of light?
  1633. A question about time dialation
  1634. Parts of a photon
  1635. time for light
  1636. Effect of gravitational potential on energy
  1637. "Independent Continuum"
  1638. What is the first result on Gravity Probe B?
  1639. Time and Gravity
  1640. twin paradox again (yes again)
  1641. relativistic limit?
  1642. Photons
  1643. time and the 4th dimension
  1644. confused about SR
  1645. Prediction on Gravity Probe B Data
  1646. Question on Relativistic Doppler Shift
  1647. metric of supermassive black holes
  1648. Does a magnet slow time?
  1649. schwarzschild black hole/kruskal extension
  1650. Delta T > To???
  1651. antisymmetrized tensor product
  1652. Proof of Universe Expansion
  1653. How fast is gravity?
  1654. Is General Relativity a Gauge Theory?
  1655. Einstein Thought Experiment
  1656. Abraham Zelmanov's Chronometric Invariants
  1657. PDEs in SR?
  1658. Time Dilation
  1659. Some Inertial Frames may br more Equivalnet than Others
  1660. Two body problem
  1661. If I swing my arm, it can emit gravitational waves??
  1662. Increasing speed
  1663. Electric Current in Special Relativity
  1664. The Nature of Time?
  1665. Tensor field visualizations of numerical simulations of GR
  1666. Twin Paradox Theory
  1667. I Need the explaination of "The image of formation of black hole"
  1668. Proving invariance of scalar product
  1669. a few questions from introduction to sr by rindler.
  1670. kinetic energy transformation
  1671. detonator paradox
  1672. D'Alembertian question again (sorry)
  1673. Confused by D'alembertian operator in EM
  1674. Questions about the speed of light.
  1675. twin #1 is calling twin #2 in mid flight on instant-stellar phone
  1676. Torsion tensor: Geometric interpretation
  1677. Question about Mass(special relativity)
  1678. Implications of geodesiacs(philosophical)
  1679. Metric versus Tetrad formulation of relativity
  1680. Sites
  1681. History question on aether
  1682. Black hole entropy as a Noether Charge
  1683. Double Special Relativity (DSR) fake or real??
  1684. Speed of a photon relative to another photon
  1685. Relativistic Kinetic Energy
  1686. Relativity
  1687. E=mc2 Energy converts to matter
  1688. is the first postulate neccessary?
  1689. Energy as Dimension
  1690. Doppler shift formula and the assumptions behind it
  1691. A question about constant acceleration close to the speed of light
  1692. geodesic deviation
  1693. Stress-Energy
  1694. inertial frame
  1695. Is this the fabric of the universe?
  1696. The physical nature of spacetime
  1697. Time dilation-- V relative to what?
  1698. Gravity probe-B
  1699. Linear algebra and tensors in GR
  1700. Curious
  1701. Relative time question?
  1702. Gravitational radiation reaction
  1703. invariance of uxw (velocityxphase velocity)
  1704. Visser: Lorentzian wormholes. From Einstein to Hawking 1996
  1705. Concepts for Granted
  1706. Gravity Wave Detectors
  1707. Einstein-Cartan Theory
  1708. meaning of the torsion tensor
  1709. Principle of Relativity violation
  1710. Space without time?
  1711. Simultaneity, contraction and interval.
  1712. What's exactly simultaneity?
  1713. Twin Paradox
  1714. Relative No-emission Propulsion
  1715. "Whether a person will die or not" is relative
  1716. Location of new mass when added to grav system
  1717. Relativity Question
  1718. If a "charged particle" is free falling in the gravitational field----------
  1719. Stupid Question [photons, mass, & gravity]
  1720. probably dumb question. problem understanding formula
  1721. A question about a thought experiment in space
  1722. Points of energy
  1723. Understanding simultaneity
  1724. Gravitational field has mass???
  1725. relative weight
  1726. Quick question on notation.
  1727. Questions about kinetic energy and gravitation
  1728. About Curvature
  1729. Time elapsed for watch with crystal normal or parallel to g
  1730. Theory of Relativity
  1731. Experiencing time faster rathe than slower
  1732. Lorentz-Transformation and time
  1733. Dumb Question
  1734. Simple question on curvature
  1735. Simple Question
  1736. Mass Question
  1737. photons in the stationary wave?
  1738. Near light velocity.
  1739. Solar wind and gravity forces.
  1740. Twin Paradox in S^3.
  1741. A theoretical Q about gravity
  1742. stupid question about page 70 in a first course in GR
  1743. Question on Penrose diagram for Schwazschild metric
  1744. math light bending by gravity
  1745. Absolute reference frame
  1746. c+V and c-V
  1747. Is there a maximum doppler shift?
  1748. 'one form' vector??
  1749. energy-momentum conservation equation
  1750. Physical Interactions over Great Distances...
  1751. lorentz transformation and lorentz-einstein transformations
  1752. reference frame of light
  1753. Connection between Scalar fields and Field Thoeries
  1754. Rod travelling at near c
  1755. The Lorentz Transformations and vector components
  1756. killing vector in kruskal coordinates
  1757. Equivalence principle & nonlinearity
  1758. killing's equation from infinitesimal transformation
  1759. Is space infinitely divisible?
  1760. Einstein Hilbert Action
  1761. a possible question concerning the photon
  1762. Spacetime and problem of 4th dimesion.
  1763. Relative velocity problem
  1764. Time Dilation Troubles in SR
  1765. Moving Pendulum
  1766. Space time curve
  1767. Matter = E ?
  1768. temperature of space-time?
  1769. Light exists outside of time?
  1770. Metric sign
  1771. relativistic addition of velocities without lorentz transformations
  1772. Warped space
  1773. three symbols i can never understand in relativity tesbooks
  1774. Gravito-Electro-Magnetism problem
  1775. principle of extremal aging
  1776. riding on a beam of light - time and space
  1777. space time question
  1778. Have absolute gravitational singularities ever formed?
  1779. Question
  1780. Carlip's explanation of lack of gravitational aberration
  1781. What is this???
  1782. Square Root in Special Relativity
  1783. Special and general relativity resources