Article View: sci.physics.relativity
Article #581Re: VARIABLE SPEED OF LIGHT: FUNDAMENTAL THEOREMS
From: G. L. Bradford
Date: Wed, 28 Apr 2010 18:09
Date: Wed, 28 Apr 2010 18:09
43 lines
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3780 bytes
"Sue..." <suzysewnshow@yahoo.com.au> wrote in message news:ad4c70d4-964d-4f3e-a92f-16c126d97adc@b23g2000yqn.googlegroups.com... On Apr 28, 12:42 am, Pentcho Valev <pva...@yahoo.com> wrote: > http://math.ucr.edu/home/baez/physics/Relativity/SR/barn_pole.html > "These are the props. You own a barn, 40m long, with automatic doors > at either end, that can be opened and closed simultaneously by a > switch. You also have a pole, 80m long, which of course won't fit in > the barn. Now someone takes the pole and tries to run (at nearly the > speed of light) through the barn with the pole horizontal. Special > Relativity (SR) says << the four-dimensional space-time continuum of the theory of relativity, in its most essential formal properties, shows a pronounced relationship to the three-dimensional continuum of Euclidean geometrical space. In order to give due prominence to this relationship, however, we must replace the usual time co-ordinate t by an imaginary magnitude sqrt(-1) ct proportional to it. Under these conditions, the natural laws satisfying the demands of the (special) theory of relativity assume mathematical forms, in which the time co-ordinate plays exactly the same rοΏ½le as the three space co-ordinates. >> http://www.bartleby.com/173/17.html ======================== "...in which the time coordinate play exactly the same role as the three space co-ordinates." And reality is caricatured because it does for what in reality is a 1-dimensional string (the most glaring example of a 1-dimensional string, the "observable universe") but it doesn't do -- and will never do -- for a multi-dimensional (represented 0-dimensional) singularity. GLB ========================
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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!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: Wed, 28 Apr 2010 13:10:10 -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> <7b80e74b-3994-4c95-a080-7f1b92163ba7@v14g2000yqb.googlegroups.com> <o-edndyGFogIvUrWnZ2dnUVZ_q6dnZ2d@insightbb.com> <11c22d79-8819-4203-bddd-6b2fd8132b5d@f6g2000yqa.googlegroups.com> <97d28ae2-1b58-4b91-ad4e-31c078236e3e@k41g2000yqf.googlegroups.com> <ad4c70d4-964d-4f3e-a92f-16c126d97adc@b23g2000yqn.googlegroups.com> In-Reply-To: <ad4c70d4-964d-4f3e-a92f-16c126d97adc@b23g2000yqn.googlegroups.com> Subject: Re: VARIABLE SPEED OF LIGHT: FUNDAMENTAL THEOREMS Date: Wed, 28 Apr 2010 14:09:52 -0400 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 8bit 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: <EaedndYHA82f50XWnZ2dnUVZ_uGdnZ2d@insightbb.com> Lines: 44 X-Usenet-Provider: http://www.giganews.com X-AuthenticatedUsername: NoAuthUser X-Trace: sv3-AaMuY0YDHyumplzvf5ow0KswSHT0QACa1WogkL6QebsjHiq8+wzDqDO5l4kb7SLuyIfC8GrVOjv/rpe!Ag//ZP+u43elYG7httwwTeMpdZ/NjDYdE9fKbF6V4ABZ21n9uYDlebf14agItMeuTw90QTzZDdLF!5MokJzx3tzFBEIes 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