Article View: sci.physics.relativity
Article #6939Re: Quick and earnest question about MMX
From: Pentcho Valev
Date: Tue, 17 Mar 2009 15:05
Date: Tue, 17 Mar 2009 15:05
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8658 bytes
On Mar 17, 4:14 pm, Tom Roberts <tjroberts...@sbcglobal.net> wrote: > Hmmmm. I'm pretty sure there was no sensible emission theory before the > MMX, there were only vague notions. Calling those vague notions > "emission theory" is a misnomer, as proponents of what is today known as > "emission theory", such as Ritz (and Wilson :-)), also came much later > than the MMX. Don't lie Honest Roberts don't lie: http://www.astrofind.net/documents/the-composition-and-essence-of-radiation.php The Development of Our Views on the Composition and Essence of Radiation by Albert Einstein Albert Einstein 1909: "A large body of facts shows undeniably that light has certain fundamental properties that are better explained by Newton's emission theory of light than by the oscillation theory. For this reason, I believe that the next phase in the development of theoretical physics will bring us a theory of light that can be considered a fusion of the oscillation and emission theories. The purpose of the following remarks is to justify this belief and to show that a profound change in our views on the composition and essence of light is imperative.....Then the electromagnetic fields that make up light no longer appear as a state of a hypothetical medium, but rather as independent entities that the light source gives off, just as in Newton's emission theory of light......Relativity theory has changed our views on light. Light is conceived not as a manifestation of the state of some hypothetical medium, but rather as an independent entity like matter. Moreover, this theory shares with the corpuscular theory of light the unusual property that light carries inertial mass from the emitting to the absorbing object." http://www.mfo.de/programme/schedule/2006/08c/OWR_2006_10.pdf Jean Eisenstaedt: "At the end of the 18th century, a natural extension of Newton's dynamics to light was developed but immediately forgotten. A body of works completed the Principia with a relativistic optics of moving bodies, the discovery of the Doppler-Fizeau effect some sixty years before Doppler, and many other effects and ideas which represent a fascinating preamble to Einstein relativities. It was simply supposed that 'a body-light', as Newton named it, was subject to the whole dynamics of the Principia in much the same way as were material particles; thus it was subject to the Galilean relativity and its velocity was supposed to be variable. Of course it was subject to the short range 'refringent' force of the corpuscular theory of light -- which is part of the Principia-- but also to the long range force of gravitation which induces Newton's theory of gravitation. The fact that the 'mass' of a corpuscle of light was not known did not constitute a problem since it does not appear in the Newtonian (or Einsteinian) equations of motion. It was precisely what John Michell (1724-1793), Robert Blair (1748-1828), Johann G. von Soldner (1776-1833) and Fran¸cois Arago (1786-1853) were to do at the end of the 18th century and the beginning the 19th century in the context of Newton's dynamics. Actually this 'completed' Newtonian theory of light and material corpuscle seems to have been implicitly accepted at the time. In such a Newtonian context, not only Soldner's calculation of the deviation of light in a gravitational field was understood, but also dark bodies (cousins of black holes). A natural (Galilean and thus relativistic) optics of moving bodies was also developed which easily explained aberration and implied as well the essence of what we call today the Doppler effect. Moreover, at the same time the structure of -- but also the questions raised by-- the Michelson experiment was understood. Most of this corpus has long been forgotten. The Michell-Blair-Arago effect, prior to Doppler's effect, is entirely unknown to physicists and historians. As to the influence of gravitation on light, the story was very superficially known but had never been studied in any detail. Moreover, the existence of a theory dealing with light, relativity and gravitation, embedded in Newton's Principia was completely ignored by physicists and by historians as well. But it was a simple and natural way to deal with the question of light, relativity (and gravitation) in a Newtonian context. EINSTEIN HIMSELF DID NOT KNOW OF THIS NEWTONIAN THEORY OF LIGHT AND HE DID NOT RELY ON IT IN HIS OWN RESEARCH." http://ustl1.univ-lille1.fr/culture/publication/lna/detail/lna40/pgs/4_5.pdf Jean Eisenstaedt: "Il ny a alors aucune raison théorique à ce que la vitesse de la lumière ne dépende pas de la vitesse de sa source ainsi que de celle de l'observateur terrestre ; plus clairement encore, il ny a pas de raison, dans le cadre de la logique des Principia de Newton, pour que la lumière se comporte autrement quant à sa trajectoire quune particule matérielle. Il ny a pas non plus de raison pour que la lumière ne soit pas sensible à la gravitation. Bref, pourquoi ne pas appliquer à la lumière toute la théorie newtonienne ? Cest en fait ce que font plusieurs astronomes, opticiens, philosophes de la nature à la fin du XVIIIème siècle. Les résultats sont étonnants... et aujourdhui nouveaux. Il se passe fort peu de choses avant John Michell, pasteur, philosophe de la nature et fervent newtonien, qui ouvre à la lumière les portes de la gravitation. En 1784, il publie un article aussi remarquable que peu remarqué sur le sujet. Un corpuscule lumineux est soumis à la force gravitationnelle de létoile qui la émis : il voit donc sa vitesse peu à peu diminuée. Appliquant les Principia, Michell fait le calcul et savise que si l'étoile est très très ! massive alors le corpuscule lumineux est tellement freiné que sa vitesse est bientôt nulle et, comme une fusée, comme une pierre lancée du sol vers le ciel, il retombe vers l'étoile qui la émis. Toutes les particules lumineuses retombent donc sur létoile qui ne sera plus visible de loin. À ces étoiles étranges, cousines de nos trous noirs, Laplace donnera, une douzaine dannée plus tard, le nom de « corps obscurs »....Pourtant, au plan des structures physiques, l'optique relativiste des corps en mouvement de cette fin du XVIIIème est infiniment plus intéressante et plus utile pédagogiquement que le long cheminement qu'a imposé l'éther." > Maxwell's theory is what Michelson and Morley were testing. > They refuted it. Because Maxwell's theory implicitly involved the false light postulate introduced in 1905 by Einstein, Honest Roberts. That is, Michelson and Morley in fact refuted Einstein's 1905 false light postulate. On the other hand, Newton's emission theory of light implicitly involved the antithesis of the light postulate, the true equation c'=c+v, and accordingly Michelson and Morley CONFIRMED this theory, although they did not consider it (were preoccupied with the ether). Pentcho Valev pvalev@yahoo.com
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X-Google-Thread: 10f545,3c50e285d632b2b2 X-Google-Thread: 10b271,a2909f7a7e37dae1,start X-Google-Thread: fa4c1,a2909f7a7e37dae1,start X-Google-Attributes: gid10f545,gid10b271,gidfa4c1,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!e18g2000yqo.googlegroups.com!not-for-mail From: Pentcho Valev <pvalev@yahoo.com> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique Subject: Re: Quick and earnest question about MMX Date: Tue, 17 Mar 2009 08:05:45 -0700 (PDT) Organization: http://groups.google.com Lines: 117 Message-ID: <cd8d8b2d-9091-4a45-9b52-ee077a7f96dd@e18g2000yqo.googlegroups.com> References: <49bcec8e$0$21575$822641b3@news.adtechcomputers.com> <qfavl.2065$im1.1178@nlpi061.nbdc.sbc.com> <c96FXEEDzrvJFw3l@kennaugh2435hex.freeserve.co.uk> <efOvl.21419$c45.3552@nlpi065.nbdc.sbc.com> NNTP-Posting-Host: 79.100.231.46 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1237302345 8955 127.0.0.1 (17 Mar 2009 15:05:45 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 17 Mar 2009 15:05:45 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: e18g2000yqo.googlegroups.com; posting-host=79.100.231.46; posting-account=Lz-LbgoAAABPDavKeW-eYeobwLHD_cvQ User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30),gzip(gfe),gzip(gfe)