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Article #584Re: VARIABLE SPEED OF LIGHT: FUNDAMENTAL THEOREMS
From: bill
Date: Thu, 29 Apr 2010 07:25
Date: Thu, 29 Apr 2010 07:25
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2468 bytes
On Apr 27, 2:28 pm, Pentcho Valev <pva...@yahoo.com> wrote: > http://www.physlink.com/Education/AskExperts/ae13.cfm > Indeed, this is exactly how Einstein did the calculation > in: 'On the Influence of Gravitation on the Propagation of Light,' > Annalen der Physik, 35, 1911. which predated the full formal > development of general relativity by about four years. This paper is > widely available in English. You can find a copy beginning on page 99 > of the Dover book 'The Principle of Relativity.' You will find in > section 3 of that paper, Einstein's derivation of the (variable) speed > of light in a gravitational potential, eqn (3). The result is, > c' = c0 ( 1 + V / c^2 ) > where V is the gravitational potential relative to the point where the > speed of light c0 is measured." > > Pentcho Valev > pva...@yahoo.com I have regrettably misplaced my copy of Muller's book 'The Principle of Relativity'(?) wherein he also provided an equation which allowed the reader to determine the various speeds of a beam of light at different altitudes. Could his equation have been identical to the above? I assume so.
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X-Google-Thread: 237b8ad48,eedd9a86f7e317b1 X-Google-Attributes: gid237b8ad48,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!k17g2000pro.googlegroups.com!not-for-mail From: bill <cosmosco@optusnet.com.au> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,fr.sci.astrophysique Subject: Re: VARIABLE SPEED OF LIGHT: FUNDAMENTAL THEOREMS Date: Thu, 29 Apr 2010 00:25:49 -0700 (PDT) Organization: http://groups.google.com Lines: 25 Message-ID: <fbb59d84-a1e6-4c2f-b627-f11b7e5e4d21@k17g2000pro.googlegroups.com> References: <483a4d42-81e7-4ee2-9531-7bd30c67301d@12g2000yqi.googlegroups.com> NNTP-Posting-Host: 58.110.95.4 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1272525950 32369 127.0.0.1 (29 Apr 2010 07:25:50 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Thu, 29 Apr 2010 07:25:50 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: k17g2000pro.googlegroups.com; posting-host=58.110.95.4; posting-account=-EhAuAoAAAC442idEIvctKWOndJMW4kt User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3,gzip(gfe)