Article View: sci.physics.relativity
Article #1246Re: THE SHORTEST HISTORY OF RELATIVITY
From: Pentcho Valev
Date: Mon, 03 Aug 2009 05:26
Date: Mon, 03 Aug 2009 05:26
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9597 bytes
> In 1887 the Michelson-Morley experiment was unequivocally consistent > with the thesis "The speed of light varies with the speed of the light > source v in accordance with the equation c'=c+v given by Newton's > emission theory of light" and inconsistent with the antithesis "The > speed of light is independent of the speed of the light > source" (Einstein's 1905 false light postulate). Then FitzGerald, > Lorentz and Einstein procrusteanized the reality (introduced length > contraction, time dilation etc.) so as to make the Michelson-Morley > experiment inconsistent with the thesis and consistent with the > antithesis. > > In 1907 Einstein realized that the speed of light varied with the > gravitational potential V. This meant that three equivalent equations: > c'=c(1+V/c^2), c'=c+v and f'=f(1+V/c^2), where f is the frequency of > light, were either simultaneously valid or simultaneously wrong. In > 1960 Pound and Rebka experimentally confirmed the validity of the > third equation but Einstein had known all along that all three > equations were valid and had even explicitly etablished c'=c(1+V/c^2) > in 1911. The history of relativity after 1911 can be characterized in > this way: > > "Development of multilayered camouflage of the validity of the thesis > c'=c+v given by Newton's emission theory of light" > > In the end, the antithesis became "the linchpin that holds the whole > range of modern physics theories together": > > http://www.ekkehard-friebe.de/wallace.htm > Bryan Wallace: "Einstein's special relativity theory with his second > postulate that the speed of light in space is constant is the linchpin > that holds the whole range of modern physics theories together. > Shatter this postulate, and modern physics becomes an elaborate > farce!....The speed of light is c+v." > > Albert Einstein: "If the speed of light is the least bit affected by > the speed of the light source, then my whole theory of relativity and > theory of gravity is false." Early Einsteinians (including Einstein) were relatively honest from time to time: http://en.wikisource.org/wiki/The_Development_of_Our_Views_on_the_Composition_and_Essence_of_Radiation 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.physlink.com/Education/AskExperts/ae13.cfm "So, it is absolutely true that the speed of light is not constant in a gravitational field [which, by the equivalence principle, applies as well to accelerating (non-inertial) frames of reference]. If this were not so, there would be no bending of light by the gravitational field of stars....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." http://books.google.com/books?id=JokgnS1JtmMC "Relativity and Its Roots" By Banesh Hoffmann p.92: "Moreover, if light consists of particles, as Einstein had suggested in his paper submitted just thirteen weeks before this one, the second principle seems absurd: A stone thrown from a speeding train can do far more damage than one thrown from a train at rest; the speed of the particle is not independent of the motion of the object emitting it. And if we take light to consist of particles and assume that these particles obey Newton's laws, they will conform to Newtonian relativity and thus automatically account for the null result of the Michelson-Morley experiment without recourse to contracting lengths, local time, or Lorentz transformations. Yet, as we have seen, Einstein resisted the temptation to account for the null result in terms of particles of light and simple, familiar Newtonian ideas, and introduced as his second postulate something that was more or less obvious when thought of in terms of waves in an ether." Today's Einsteinians are absolutely dishonest: http://www.amazon.com/Brief-History-Time-Stephen-Hawking/dp/0553380168 Stephen Hawking, "A Brief History of Time", Chapter 6: "Under the theory that light is made up of waves, it was not clear how it would respond to gravity. But if light is composed of particles, one might expect them to be affected by gravity in the same way that cannonballs, rockets, and planets are.....In fact, it is not really consistent to treat light like cannonballs in Newtons theory of gravity because the speed of light is fixed. (A cannonball fired upward from the earth will be slowed down by gravity and will eventually stop and fall back; a photon, however, must continue upward at a constant speed...)" http://streamer.perimeterinstitute.ca/mediasite/viewer/?peid=5f32739a-624d-4ec8-9ecc-4d44d3d16fe9 Lee Smolin: "Newton's theory predicts that light goes in straight lines and therefore if the star passes behind the sun, we can't see it. Einstein's theory predicts that light is bent...." http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/speed_of_light.html Steve Carlip: "Is c, the speed of light in vacuum, constant? At the 1983 Conference Generale des Poids et Mesures, the following SI (Systeme International) definition of the metre was adopted: The metre is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second. This defines the speed of light in vacuum to be exactly 299,792,458 m/s. This provides a very short answer to the question "Is c constant": Yes, c is CONSTANT BY DEFINITION!....Einstein went on to discover a more general theory of relativity which explained gravity in terms of curved spacetime, and he talked about the speed of light changing in this new theory. In the 1920 book "Relativity: the special and general theory" he wrote: ". . . according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity [. . .] cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity of propagation of light varies with position." Since Einstein talks of velocity (a vector quantity: speed with direction) rather than speed alone, it is not clear that he meant the speed will change, but the reference to special relativity suggests that he did mean so. THIS INTERPRETATION IS PERFECTLY VALID AND MAKES GOOD PHYSICAL SENSE, BUT A MORE MODERN INTERPRETATION IS THAT THE SPEED OF LIGHT IS CONSTANT in general relativity." Pentcho Valev pvalev@yahoo.com
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X-Google-Thread: 237b8ad48,ddddb3ccc0c937c4 X-Google-Attributes: gid237b8ad48,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!k6g2000yqn.googlegroups.com!not-for-mail From: Pentcho Valev <pvalev@yahoo.com> Newsgroups: sci.physics.relativity,sci.physics,fr.sci.physique,fr.sci.astrophysique Subject: Re: THE SHORTEST HISTORY OF RELATIVITY Date: Sun, 2 Aug 2009 22:26:14 -0700 (PDT) Organization: http://groups.google.com Lines: 142 Message-ID: <ef7c1ccd-3e7b-48e5-a1b5-9aa92ba382ae@k6g2000yqn.googlegroups.com> References: <3b0e50e0-3832-47ad-8c65-80f49c045573@s15g2000yqs.googlegroups.com> <4A7323D4.F254F243@hate.spam.net> NNTP-Posting-Host: 89.215.201.46 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: posting.google.com 1249277175 14565 127.0.0.1 (3 Aug 2009 05:26:15 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 3 Aug 2009 05:26:15 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: k6g2000yqn.googlegroups.com; posting-host=89.215.201.46; 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)