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Article #696Re: THE MAGICIAN'S HAT MODEL OF SCIENCE
From: Pentcho Valev
Date: Wed, 17 Mar 2010 06:49
Date: Wed, 17 Mar 2010 06:49
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Einsteiniana's revolutions used to involve two campaigns (often occurring simultaneously): Campaign 1: An extremely heretical claim, usually challenging Einstein's 1905 false light postulate, is advanced and even experimentally confirmed. Selected "mavericks" in Einsteiniana extract maximum career and money from the fuss: http://www.newscientist.com/article/mg20327246.800-13-more-things-magic-results.html "In 2005, researchers at the MAGIC gamma-ray telescope on La Palma in the Canary Islands were studying gamma-ray bursts emitted by the black hole in the centre of the Markarian 501 galaxy, half a billion light years away. The burst's high-energy gamma rays arrived at the telescope 4 minutes later than the lower-energy rays. Both parts of the spectrum should have been emitted at the same time. So is the time lag due to the high-energy radiation travelling slower through space? That wouldn't make sense: it would contravene one of the central tenets of special relativity. According to Einstein, all electromagnetic radiation always travels through vacuum at the cosmic speed limit the speed of light. The energy of the radiation should be absolutely irrelevant." http://www.edge.org/3rd_culture/smolin03/smolin03_print.html Lee Smolin: "Now, here is the really interesting part: Some of the effects predicted by the theory appear to be in conflict with one of the principles of Einstein's special theory of relativity, the theory that says that the speed of light is a universal constant. It's the same for all photons, and it is independent of the motion of the sender or observer. How is this possible, if that theory is itself based on the principles of relativity? The principle of the constancy of the speed of light is part of special relativity, but we quantized Einstein's general theory of relativity.....But there is another possibility. This is that the principle of relativity is preserved, but Einstein's special theory of relativity requires modification so as to allow photons to have a speed that depends on energy. The most shocking thing I have learned in the last year is that this is a real possibility. A photon can have an energy-dependent speed without violating the principle of relativity! This was understood a few years ago by Amelino Camelia. I got involved in this issue through work I did with Joao Magueijo, a very talented young cosmologist at Imperial College, London. During the two years I spent working there, Joao kept coming to me and bugging me with this problem.....These ideas all seemed crazy to me, and for a long time I didn't get it. I was sure it was wrong! But Joao kept bugging me and slowly I realized that they had a point. We have since written several papers together showing how Einstein's postulates may be modified to give a new version of special relativity in which the speed of light can depend on energy." Campaign 2: The extremely heretical claim is useless and even harmful (in terms of career and money) for other Einsteinians so it is slowly but surely being undermined, with "Einstein is still right" as the final conclusion. The selected "mavericks" gradually abandon their heresy but career and money gained in the first campaign remain: http://blogs.discovermagazine.com/80beats/2009/10/29/a-gamma-ray-race-through-the-fabric-of-space-time-proves-einstein-right/ "New results are in from the Fermi Space Telescope, which settled into orbit in the summer of 2008, and the findings seem to prove Albert Einstein right once again. Man, that guy was good. (...) But the study of the Fermi Telescopes results, published in Nature, declares that since all the gamma rays arrived within nine-tenths of a second apart, they must have all traveled at almost exactly the same speed. (...) Physicists working with the Fermi Telescope will keep looking for new evidence. But for now, says study coauthor Peter F. Michelson, "I take it as a confirmation that Einstein is still right" [The New York Times]." Pentcho Valev wrote: The MAGICIAN'S HAT model of science in action. Initially, an idiotic "axiom" is advanced; then magicians are free to extract career, money, Nobel prizes etc. from it; all along believers should sing dithyrambs, "until any single one of the host of equations that can be derived from it....has been shown experimentally to be false": L. McGlashan, Chemical thermodynamics, Academic Press, London (1979), pp. 72-73: "For an infinitesimal change in the state of a phase alpha we write dU = T dS - p dV + SUM mu_B dn_B (1) We regard equation (1) as an axiom and call it the fundamental equation for a change of the state of a phase alpha. It is one half of the second law of thermodynamics. We do not ask where it comes from. Indeed we do not admit the existence of any more fundamental relations from which it might have been derived. Nor shall we here enquire into the history of its formulation, though that is a subject of great interest to the historian of science. It is a starting point ; it must be learnt by heart. It may be allowed to stand as an axiom until any single one of the host of equations that can be derived from it (with the help of other axioms of thermodynamics) has been shown experimentally to be false." For a closed system doing reversible work of expansion the first law of thermodynamics takes the form dU = dQ - PdV /1/ where dU is the internal energy change, dQ is the heat absorbed, P is pressure and V is volume. Since the system is CLOSED and undergoes reversible changes the entropy change is, by definition, dS=dQ/T and / 1/ becomes: dU = TdS - PdV /2/ J. Gibbs managed to convince the world that, if the system is OPEN (substances are added to it), /2/ should be replaced by the equation: dU = TdS - PdV + SUM mu_i dn_i /3/ where mu_i is the chemical potential and n_i is the amount of the ith component. However Gibbs failed to explain the meaning of the entropy change, dS, for an OPEN system. Was dS again equal to dQ/T, as it is for a closed system, or was dS equal to something else when substances were added to the system? The fact that dS was not defined for open systems made the equation / 3/ so fashionable (scientists adore equations with undefined terms) that in the end /3/ was called "the fundamental equation of thermodynamics". Yet scientists somehow felt that a new explicit definition of dS could bring even more career and money. The quickest among them, Ilya Prigogine, simply combined /1/ and /3/ and obtained dS = dQ/T - (1/T)SUM mu_i dn_i /4/ That was a new incredible definition of the entropy change (the scientific community had never seen anything like this) so the Nobel Committee immediately gave Prigogine the Nobel prize. Believers do not know how /4/ can be "shown experimentally to be false". Similarly, they do not know how the statement "The greenness of the crocodile exceeds its length" can be shown experimentally to be false. Pentcho Valev pvalev@yahoo.com
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X-Google-Thread: 111645,ea82cd8066f78eed X-Google-NewGroupId: yes X-Google-Attributes: gid237b8ad48,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!19g2000yqu.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 MAGICIAN'S HAT MODEL OF SCIENCE Date: Tue, 16 Mar 2010 23:49:43 -0700 (PDT) Organization: http://groups.google.com Lines: 131 Message-ID: <c545c5bf-ad73-443c-9ce2-14407d497a6b@19g2000yqu.googlegroups.com> References: <1913d299-c0c8-48f2-94df-0b0265615273@t23g2000yqt.googlegroups.com> <b13ce123-aec0-4503-a236-bafb5f47e758@y7g2000prc.googlegroups.com> <d384821b-595a-4bce-bf74-baea1c0be44a@y11g2000yqh.googlegroups.com> <f66619d6-8b11-4f32-99bb-7ddcb12fec8f@y7g2000prc.googlegroups.com> <98328cc1-d163-42bb-a1cf-3b3050fbf541@t41g2000yqt.googlegroups.com> NNTP-Posting-Host: 89.215.201.46 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: posting.google.com 1268808583 896 127.0.0.1 (17 Mar 2010 06:49:43 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Wed, 17 Mar 2010 06:49:43 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: 19g2000yqu.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 7.0; Windows NT 5.1; AskTB5.5),gzip(gfe),gzip(gfe)