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### Relativity FAQ

Sep10-12 11:09 AM bcrowell

# Special & General Relativity

- Dependence of various physical phenomena on relative motion of the observer and the observed objects. Exp. & theo. theories of relativity
 Views: 470 Announcement: End of year contest, $75+$50 prize! Dec18-13 Meta Thread / Thread Starter Last Post Replies Views The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many... Dec31-07 03:06 AM jtbell 0 35,120 Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a... Feb23-13 09:40 AM ZapperZ 1 35,273 I'm new to relativity and have only seen a few things but from what I have seen has lead me to wonder. My question is:... Feb4-04 10:15 PM binaryblade 8 1,410 Hello, this is my first post. Some years back i read a book about einstein works. Among many things in the book, i... Feb5-04 03:19 PM Phobos 17 3,406 If your in a ship traveling at the speed of light towards a planet and you are standing in the middle of the ship,... Feb5-04 03:22 PM Phobos 27 2,602 http://www.nature.com/nsu/010614/010614-6.html Einstein's theory of relativity tells us that gravity bends space.... Feb5-04 03:41 PM LURCH 2 2,369 Mass Tensor ( 1 2) There is often talk of mass and energy in this forum. I tend to use the notion of relativistic mass myself since I... Feb6-04 05:56 PM Phobos 23 2,377 Help me please! do'nt know if i'm right here, but any hint leading to a simple answer of the following question would... Feb6-04 06:46 PM Nereid 36 8,234 I've just made a new page for the GR portion of my web site. In it I derived Einstein's field equation but with a... Feb7-04 10:10 AM Phobos 7 1,903 There is a couple of questions that have arisen after i read about the general theory of relativity. 1. Should it... Feb8-04 12:11 AM Stingray 26 5,888 I have raised this issue in a different manner before - but never got a satisfactory analysis. In the traditional... Feb8-04 01:24 PM yogi 7 1,483 In 1906 Einstein utilized the center-of-mass theorem to derive an expression for the inertia of energy and an... Feb8-04 08:00 PM pmb_phy 6 5,225 i know that gravity can bend light so from this principle i have two theoretical questions. first, can light bend... Feb9-04 10:04 AM pmb_phy 2 3,958 I am attemting to help my son with a Physics problem, and it has been 20 years since my last Physics class. I would be... Feb9-04 07:49 PM Bigniko 0 1,204 I went over this with someone here a while ago and I think they became exhausted with me. Anyway, I went away to think... Feb10-04 07:43 AM DW 18 2,690 Here is one that's been bugging me a lot: Observer A is zooming along in a very fast car at 0.995c. The "rest... Feb10-04 07:58 PM pmb_phy 29 2,312 arXiv:astro-ph/0301184 v3 27 Jan 2003 The phase coherence of light from extragalactic sources direct evidence... Feb12-04 09:57 AM wolram 0 1,200 I have a straight forward question that hopefully somebody can answer. In SR, does the relativistic mass of an... Feb13-04 11:53 AM AWolf 12 1,292 http://www.npl.washington.edu/eotwash/gconst.html Recently the value of G has been called into question by new... Feb13-04 12:22 PM wolram 0 1,201 arXiv:physics/0307003 v1 1 Jul 2003 . GRAVITY AS QUANTUM FOAM IN-FLOW Reginald T.Cahill School of Chemistry,... Feb13-04 01:02 PM wolram 0 1,010 this was a new post today http://arxiv.org/astro-ph/0401244 it is still just a germinal idea remember in 1998... Feb13-04 02:42 PM Phobos 18 1,569 if space is expanding and we take it that it is quantasized into planckian units of invariant dimensions what is the... Feb13-04 05:27 PM meteor 1 1,266 I was thinking in the feasibility of constructing an apparatus that can inform you about what's the metric of the zone... Feb13-04 06:16 PM meteor 0 1,018 ok, thought of something here, tell me what you think.......... if time were to slow down or speed up or stop all... Feb13-04 07:34 PM LURCH 3 1,077 An article published today at http://spaceflightnow.com/news/n0402/11lens/ stated that "Einstein's general theory of... Feb14-04 03:34 PM RMDumse 1 1,677 First of all let me say Hello! as this is my first post. I am a biologist, and have been reading over the very basics... Feb14-04 10:06 PM Sammywu 122 5,739 I don't recall what thread it was in but there was a comment that F = ma for a relativistic mass. I stated it was... Feb15-04 11:06 AM Nudnik 1 3,647 A commonly accepted modern SR/Gr statement is "timelike geodesics are maxima of the proper time". I really shall... Feb16-04 06:31 AM pmb_phy 7 1,650 Was not the Special Theory of Relativity and the Lorentz Transformation created simply to explain why the... Feb16-04 04:02 PM Integral 4 1,372 Stephen Hawking and the No Boundary Proposal The no boundary proposal has been around for quite some time now,... Feb17-04 12:44 PM Vast 2 5,494 Davis and Lineweaver "Expanding Confusion: common misconceptions of cosmological horizons and the superluminal... Feb17-04 01:00 PM DrChinese 10 1,500 Ok. I have a question on SR/GR with regards to Einstein. How did he come up with this? That's what I don't... Feb17-04 01:07 PM pmb_phy 5 2,053 I am reading a book called Simply Einstein...it wonderfully helps a novice understand Einstien's theory or relativity.... Feb17-04 02:41 PM gnome 7 1,380 http://arxiv.org/abs/astro-ph/0401136 The theory of Self Creation Cosmology is described and found to be as... Feb18-04 01:06 PM marcus 2 1,395 http://doc.cern.ch//archive/electronic/gr-qc/0402/0402009.pdf A perspective on Quantum Gravity Phenomenology1 ... Feb18-04 01:14 PM wolram 4 982 arXiv:gr-qc/0401102 v1 26 Jan 2004 A New Approach in Quantum Gravity and its Cosmological Implications Simone... Feb18-04 02:39 PM wolram 2 1,046 It's known and experimented when you shoot a light beam upward from Erath surface to a light detector at higher... Feb18-04 07:19 PM Sammywu 17 3,271 Im doing a project this yr on the title in the subject and i have been struggling to find imformation on this problem... Feb19-04 05:34 AM beardless2 3 2,126 Just got 2 hours to kill, I noticed this at the gravity probe B website FAQ webpage. *** Can space exist by... Feb21-04 08:48 AM meemoe_uk 0 1,053 Hi All, Probably some of you have seen papers relating Woodward research of the origin of Gravity and Mach's... Feb23-04 06:58 AM TeV 6 1,542 I have seen a derivation of the dependence of the speed of light inside a Schwarschild space-time: c depends on the... Feb25-04 04:01 AM hellfire 6 1,939 Suppose we have a closed/periodic universe (t,x) ~ (t,x+L) where L is the circumference of universe. Jack and Jill set... Feb25-04 12:44 PM beardless2 0 1,695