Article View: sci.physics.relativity
Article #586Re: VARIABLE SPEED OF LIGHT: FUNDAMENTAL THEOREMS
From: G. L. Bradford
Date: Thu, 29 Apr 2010 16:16
Date: Thu, 29 Apr 2010 16:16
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3963 bytes
"bill" <cosmosco@optusnet.com.au> wrote in message news:fbb59d84-a1e6-4c2f-b627-f11b7e5e4d21@k17g2000pro.googlegroups.com... 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. ========================== You will still measure the speed of light locally to be c. Several kilometers or miles, or even meters or yards, up in altitude from that local instrumentation for measuring is a fraction of a light second away. Thus you are dealing in the local measurement and observation of a distant non-local (observation from a distance) which isn't even in your time (being a fraction of a second back of your time, and not exactly the same fraction at all times due to the variability in distance (varying differences in any distant non-local curvature from the more local curvature)). GLB ==========================
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X-Google-Thread: 10f545,eedd9a86f7e317b1 X-Google-NewGroupId: yes X-Google-Thread: 10b271,eedd9a86f7e317b1 X-Google-NewGroupId: yes X-Google-Thread: fa4c1,eedd9a86f7e317b1 X-Google-NewGroupId: yes X-Google-Thread: 111645,eedd9a86f7e317b1 X-Google-NewGroupId: yes X-Google-Attributes: gid41be78289e,gid54ac8f410d,gid2479375fed,gid237b8ad48,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!nntp.insightbb.com!news.insightbb.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 29 Apr 2010 11:16:41 -0500 From: "G. L. Bradford" <glbrad01@insightbb.com> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,fr.sci.astrophysique References: <483a4d42-81e7-4ee2-9531-7bd30c67301d@12g2000yqi.googlegroups.com> <fbb59d84-a1e6-4c2f-b627-f11b7e5e4d21@k17g2000pro.googlegroups.com> In-Reply-To: <fbb59d84-a1e6-4c2f-b627-f11b7e5e4d21@k17g2000pro.googlegroups.com> Subject: Re: VARIABLE SPEED OF LIGHT: FUNDAMENTAL THEOREMS Date: Thu, 29 Apr 2010 12:16:24 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Windows Mail 6.0.6002.18005 X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 Message-ID: <P5CdnaEo_Nt0LUTWnZ2dnUVZ_tSdnZ2d@insightbb.com> Lines: 43 X-Usenet-Provider: http://www.giganews.com X-AuthenticatedUsername: NoAuthUser X-Trace: sv3-VWnNyUnXNRrWiAhQbBQFq8nQ8vx/3POMHO4eF45uv3AEtmP1fXOmxc1UdqOOub7CIoB23H7pjjnKVwa!QpsCBzNLmkMC08RvENFs76qbvTmvCCVrI1TgYNhriZIos9TWBnwctz1lhvyDelQNJEvr/sW5/Bv7!HN9zMsaNtP0+kcHL X-Complaints-To: abuse@insightbb.com X-DMCA-Complaints-To: dmca@insightbb.com X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40