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http://arxiv.org/PS_cache/hep-th/pdf/9403/9403015v1.pdf
Carlo Rovelli: "However, the formal content of special relativity is entirely coded in the Lorentz transformations, which were written by Lorentz, not by Einstein, and several years before 1905. What was Einstein's contribution? It was to understand the physical meaning of the Lorentz transformations. We could say, in a provocative manner, that Einstein's contribution to special relativity was the interpretation of the theory, not its formalism : the formalism already existed. Einstein was so persuasive with his interpretation of the Lorentz equations because he did not append an interpretation to them: rather, he re-derivedּthem, starting from two "postulates" with clear physical meaning (equivalence of inertial observers - universality of the speed of light) taken as facts of experience." That the "universality of the speed of light" did not belong to the "facts of experience" in 1905 is more than obvious - Carlo Rovelli is simply lying. Or perhaps Carlo Rovelli is just confused - he says "facts of experience" but in fact sees some theoretical reason behind Einstein's 1905 light postulate? Jean Eisenstaedt would disagree: http://ustl1.univ-lille1.fr/culture/...40/pgs/4_5.pdf Jean Eisenstaedt: "Il n'y a alors aucune raison theorique a ce que la vitesse de la lumiere ne depende pas de la vitesse de sa source ainsi que de celle de l'observateur terrestre ; plus clairement encore, il n'y a pas de raison, dans le cadre de la logique des Principia de Newton, pour que la lumiere se comporte autrement - quant a sa trajectoire - qu'une particule materielle. Il n'y a pas non plus de raison pour que la lumiere ne soit pas sensible a la gravitation. Bref, pourquoi ne pas appliquer a la lumiere toute la theorie newtonienne ? C'est en fait ce que font plusieurs astronomes, opticiens, philosophes de la nature a la fin du XVIIIeme siecle. Les resultats sont etonnants... et aujourd'hui nouveaux." Translation from French: "Therefore there is no theoretical reason why the speed of light should not depend on the speed of the source and the speed of the terrestrial observer as well; even more clearly, there is no reason, in the framework of the logic of Newton's Principia, why light should behave, as far as its trajectory is concerned, differently from a material particle. Neither is there any reason why light should not be sensible to gravitation. Briefly, why don't we apply the whole Newtonian theory to light? In fact, that is what many astronomers, opticians, philosophers of nature did by the end of 18th century. The results are surprising....and new nowadays." Pentcho Valev |
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On Mar 16, 9:05*am, Pentcho Valev wrote:
http://arxiv.org/PS_cache/hep-th/pdf/9403/9403015v1.pdf Carlo Rovelli: "However, the formal content of special relativity is entirely coded in the Lorentz transformations, which were written by Lorentz, not by Einstein, and several years before 1905. What was Einstein's contribution? It was to understand the physical meaning of the Lorentz transformations. We could say, in a provocative manner, that Einstein's contribution to special relativity was the interpretation of the theory, not its formalism : the formalism already existed. Einstein was so persuasive with his interpretation of the Lorentz equations because he did not append an interpretation to them: rather, he re-derivedּthem, starting from two "postulates" with clear physical meaning (equivalence of inertial observers - universality of the speed of light) taken as facts of experience." That the "universality of the speed of light" did not belong to the "facts of experience" in 1905 is more than obvious - Carlo Rovelli is simply lying. Or perhaps Carlo Rovelli is just confused - he says "facts of experience" but in fact sees some theoretical reason behind Einstein's 1905 light postulate? Jean Eisenstaedt would disagree: http://ustl1.univ-lille1.fr/culture/...40/pgs/4_5.pdf Jean Eisenstaedt: "Il n'y a alors aucune raison theorique a ce que la vitesse de la lumiere ne depende pas de la vitesse de sa source ainsi que de celle de l'observateur terrestre ; plus clairement encore, il n'y a pas de raison, dans le cadre de la logique des Principia de Newton, pour que la lumiere se comporte autrement - quant a sa trajectoire - qu'une particule materielle. Il n'y a pas non plus de raison pour que la lumiere ne soit pas sensible a la gravitation. Bref, pourquoi ne pas appliquer a la lumiere toute la theorie newtonienne ? C'est en fait ce que font plusieurs astronomes, opticiens, philosophes de la nature a la fin du XVIIIeme siecle. Les resultats sont etonnants... et aujourd'hui nouveaux." Translation from French: "Therefore there is no theoretical reason why the speed of light should not depend on the speed of the source and the speed of the terrestrial observer as well; even more clearly, there is no reason, in the framework of the logic of Newton's Principia, why light should behave, as far as its trajectory is concerned, differently from a material particle. Neither is there any reason why light should not be sensible to gravitation. Briefly, why don't we apply the whole Newtonian theory to light? In fact, that is what many astronomers, opticians, philosophers of nature did by the end of 18th century. The results are surprising....and new nowadays." Silly Carlo Rovelli does not know the other Einstein's confessions: http://www.ws5.com/copy/time2.pdf Silly Carlo Rovelli: "Einstein believed Maxwell theory as a fundamental theory and believed the Galilean insight that velocity is relative and inertial system are equivalent. Merging the two, he found special relativity. A main result of special relativity is that the field cannot be regarded as describing vibrations of underlying matter. The idea of the ether is abandoned, and the field has to be taken seriously as elementary constituent of reality. This is a major change from the ontology of Cartesian-Newtonian physics. In the best description we can give of the physical world, there is a new actor: the field." http://www.perimeterinstitute.ca/pdf...09145525ca.pdf John Stachel: "It is not so well known that there was "another Einstein," who from 1916 on was skeptical about the CONTINUUM as a foundational element in physics..." Albert Einstein: "I consider it entirely possible that physics cannot be based upon the FIELD concept, that is on CONTINUOUS structures. Then nothing will remain of my whole castle in the air, including the theory of gravitation, but also nothing of the rest of contemporary physics." Some day silly Carlo Rovelli will realize that "discontinuous structures" impy that Einstein's 1905 light postulate is false whereas the equation c'=c+v given by Newton's emission theory of light is true: http://www.amazon.com/Relativity-Its.../dp/0486406768 "Relativity and Its Roots" by Banesh Hoffmann, Chapter 5. (I do not have the text in English so I am giving it in French) Banesh Hoffmann, "La relativite, histoire d'une grande idee", Pour la Science, Paris, 1999, p. 112: "De plus, si l'on admet que la lumiere est constituee de particules, comme Einstein l'avait suggere dans son premier article, 13 semaines plus tot, le second principe parait absurde: une pierre jetee d'un train qui roule tres vite fait bien plus de degats que si on la jette d'un train a l'arret. Or, d'apres Einstein, la vitesse d'une certaine particule ne serait pas independante du mouvement du corps qui l'emet! Si nous considerons que la lumiere est composee de particules qui obeissent aux lois de Newton, ces particules se conformeront a la relativite newtonienne. Dans ce cas, il n'est pas necessaire de recourir a la contraction des longueurs, au temps local ou a la transformation de Lorentz pour expliquer l'echec de l'experience de Michelson-Morley. Einstein, comme nous l'avons vu, resista cependant a la tentation d'expliquer ces echecs a l'aide des idees newtoniennes, simples et familieres. Il introduisit son second postulat, plus ou moins evident lorsqu'on pensait en termes d'ondes dans l'ether." Translation from French: "Moreover, if one admits that light consists of particles, as Einstein had suggested in his first paper, 13 weeks earlier, the second principle seems absurd: a stone thrown from a fast- moving train causes much more damage than one thrown from a train at rest. Now, according to Einstein, the speed of a particle would not be independent of the state of motion of the emitting body! If we consider light as composed of particles that obey Newton's laws, those particles would conform to Newtonian relativity. In this case, it is not necessary to resort to length contration, local time and Lorentz transformations in explaining the negative result of the Michelson- Morley experiment. Einstein however, as we have seen, resisted the temptation to explain the negative result in terms of Newton's ideas, simple and familiar. He introduced his second postulate, more or less evident as one thinks in terms of waves in aether." Pentcho Valev |
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On Mar 17, 6:15*pm, Pentcho Valev wrote:
On Mar 16, 9:05*am, Pentcho Valev wrote: http://arxiv.org/PS_cache/hep-th/pdf/9403/9403015v1.pdf Carlo Rovelli: "However, the formal content of special relativity is entirely coded in the Lorentz transformations, which were written by Lorentz, not by Einstein, and several years before 1905. What was Einstein's contribution? It was to understand the physical meaning of the Lorentz transformations. We could say, in a provocative manner, that Einstein's contribution to special relativity was the interpretation of the theory, not its formalism : the formalism already existed. Einstein was so persuasive with his interpretation of the Lorentz equations because he did not append an interpretation to them: rather, he re-derivedּthem, starting from two "postulates" with clear physical meaning (equivalence of inertial observers - universality of the speed of light) taken as facts of experience." That the "universality of the speed of light" did not belong to the "facts of experience" in 1905 is more than obvious - Carlo Rovelli is simply lying. Or perhaps Carlo Rovelli is just confused - he says "facts of experience" but in fact sees some theoretical reason behind Einstein's 1905 light postulate? Jean Eisenstaedt would disagree: http://ustl1.univ-lille1.fr/culture/...0/pgs/4_5..pdf Jean Eisenstaedt: "Il n'y a alors aucune raison theorique a ce que la vitesse de la lumiere ne depende pas de la vitesse de sa source ainsi que de celle de l'observateur terrestre ; plus clairement encore, il n'y a pas de raison, dans le cadre de la logique des Principia de Newton, pour que la lumiere se comporte autrement - quant a sa trajectoire - qu'une particule materielle. Il n'y a pas non plus de raison pour que la lumiere ne soit pas sensible a la gravitation. Bref, pourquoi ne pas appliquer a la lumiere toute la theorie newtonienne ? C'est en fait ce que font plusieurs astronomes, opticiens, philosophes de la nature a la fin du XVIIIeme siecle. Les resultats sont etonnants... et aujourd'hui nouveaux." Translation from French: "Therefore there is no theoretical reason why the speed of light should not depend on the speed of the source and the speed of the terrestrial observer as well; even more clearly, there is no reason, in the framework of the logic of Newton's Principia, why light should behave, as far as its trajectory is concerned, differently from a material particle. Neither is there any reason why light should not be sensible to gravitation. Briefly, why don't we apply the whole Newtonian theory to light? In fact, that is what many astronomers, opticians, philosophers of nature did by the end of 18th century. The results are surprising....and new nowadays." Silly Carlo Rovelli does not know the other Einstein's confessions: http://www.ws5.com/copy/time2.pdf Silly Carlo Rovelli: "Einstein believed Maxwell theory as a fundamental theory and believed the Galilean insight that velocity is relative and inertial system are equivalent. Merging the two, he found special relativity. A main result of special relativity is that the field cannot be regarded as describing vibrations of underlying matter. The idea of the ether is abandoned, and the field has to be taken seriously as elementary constituent of reality. This is a major change from the ontology of Cartesian-Newtonian physics. In the best description we can give of the physical world, there is a new actor: the field." http://www.perimeterinstitute.ca/pdf...09145525ca.pdf John Stachel: "It is not so well known that there was "another Einstein," who from 1916 on was skeptical about the CONTINUUM as a foundational element in physics..." Albert Einstein: "I consider it entirely possible that physics cannot be based upon the FIELD concept, that is on CONTINUOUS structures. Then nothing will remain of my whole castle in the air, including the theory of gravitation, but also nothing of the rest of contemporary physics." Some day silly Carlo Rovelli will realize that "discontinuous structures" impy that Einstein's 1905 light postulate is false whereas the equation c'=c+v given by Newton's emission theory of light is true: http://www.amazon.com/Relativity-Its.../dp/0486406768 "Relativity and Its Roots" by Banesh Hoffmann, Chapter 5. (I do not have the text in English so I am giving it in French) Banesh Hoffmann, "La relativite, histoire d'une grande idee", Pour la Science, Paris, 1999, p. 112: "De plus, si l'on admet que la lumiere est constituee de particules, comme Einstein l'avait suggere dans son premier article, 13 semaines plus tot, le second principe parait absurde: une pierre jetee d'un train qui roule tres vite fait bien plus de degats que si on la jette d'un train a l'arret. Or, d'apres Einstein, la vitesse d'une certaine particule ne serait pas independante du mouvement du corps qui l'emet! Si nous considerons que la lumiere est composee de particules qui obeissent aux lois de Newton, ces particules se conformeront a la relativite newtonienne. Dans ce cas, il n'est pas necessaire de recourir a la contraction des longueurs, au temps local ou a la transformation de Lorentz pour expliquer l'echec de l'experience de Michelson-Morley. Einstein, comme nous l'avons vu, resista cependant a la tentation d'expliquer ces echecs a l'aide des idees newtoniennes, simples et familieres. Il introduisit son second postulat, plus ou moins evident lorsqu'on pensait en termes d'ondes dans l'ether." Translation from French: "Moreover, if one admits that light consists of particles, as Einstein had suggested in his first paper, 13 weeks earlier, the second principle seems absurd: a stone thrown from a fast- moving train causes much more damage than one thrown from a train at rest. Now, according to Einstein, the speed of a particle would not be independent of the state of motion of the emitting body! If we consider light as composed of particles that obey Newton's laws, those particles would conform to Newtonian relativity. In this case, it is not necessary to resort to length contration, local time and Lorentz transformations in explaining the negative result of the Michelson- Morley experiment. Einstein however, as we have seen, resisted the temptation to explain the negative result in terms of Newton's ideas, simple and familiar. He introduced his second postulate, more or less evident as one thinks in terms of waves in aether." Unlike silly Carlo Rovelli, silly Lee Smolin does know the other Einstein's confessions and can even use them against string theorists, the silliest members of Einstein criminal cult: http://discovermagazine.com/2004/sep...tart:int=2&-C= Lee Smolin: "One way to understand this story is to say that theoretical physics has finally caught up to Einstein. While he was shunned in his Princeton years as he pursued the unified field theory, the Institute for Advanced Study, where he worked, is now filled with theorists who search for new variants of unified field theories. It is indeed a vindication of sorts for Einstein because much of what today’s string theorists do in practice is play with unified theories of the kinds that Einstein and his few colleagues invented. The problem with this picture is that by the end of his life Einstein had to some extent abandoned his search for a unified field theory. He had failed to find a version of the theory that did what was most important to him, which is to explain quantum phenomena in a way that involved neither measurements nor statistics. In his last years he was moving on to something even more radical. He proposed giving up the idea that space and time are continuous. It is fair to say that while the idea that matter is made of atoms goes back at least to the Greeks, few before Einstein questioned the smoothness and continuity of space and time. To one friend, Walter Dallenbäch, he wrote, “The problem seems to me how one can formulate statements about a discontinuum without calling on a continuum as an aid; the latter should be banned from the theory as a supplementary construction not justified by the essence of the problem, which corresponds to nothing ‘real.’"......Some string theorists will claim to be Einsteinians, and certainly Einstein would have approved of their search for a unification of physics. But here is how Brian Greene, in his most recent book, The Fabric of the Cosmos, describes the state of the field: “Even today, more than three decades after its initial articulation, most string practitioners believe we still don’t have a comprehensive answer to the rudimentary question, What is string theory? Most researchers feel that our current formulation of string theory still lacks the kind of core principle we find at the heart of other major advances.”....I think a sober assessment is that up till now, almost all of us who work in theoretical physics have failed to live up to Einstein’s legacy. His demand for a coherent theory of principle was uncompromising. It has not been reached—not by quantum theory, not by special or general relativity, not by anything invented since. Einstein’s moral clarity, his insistence that we should accept nothing less than a theory that gives a completely coherent account of individual phenomena, cannot be followed unless we reject almost all contemporary theoretical physics as insufficient.....Let us be frank and admit that most of us have neither the courage nor the patience to emulate Einstein. We should instead honor Einstein by asking whether we can do anything to ensure that in the future those few who do follow Einstein’s path, who approach science as uncompromisingly as he did, have less risk of unemployment, the sort he suffered at the beginning of his career, and less risk of the marginalization he endured at the end. If we can do this, if we can make the path easier for those few who do follow him, we may make possible a revolution in science that even Einstein failed to achieve." Pentcho Valev |
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Silly Carlo Rovelli and silly John Baez seem to plagiarize one
another: http://lanl.arxiv.org/PS_cache/gr-qc.../0604045v2.pdf Silly Carlo Rovelli: "In spite of their empirical success, GR and QM offer a schizophrenic and confused understanding of the physical world." http://www.edge.org/q2008/q08_5.html Silly John Baez: "On the other hand we have General Relativity, which tries to explain gravity, and does not take quantum mechanics into account. Both theories seem to be more or less on the right track -- but until we somehow fit them together, or completely discard one or both, our picture of the world will be deeply schizophrenic." Silly John Baez knows what to do: http://www.edge.org/q2008/q08_5.html Silly John Baez: "I realized I didn't have enough confidence in either theory to engage in these heated debates. I also realized that there were other questions to work on: questions where I could actually tell when I was on the right track, questions where researchers cooperate more and fight less. So, I eventually decided to quit working on quantum gravity." Silly Carlo Rovelli would follow silly John Baez but there are problems with the money silly Carlo Rovelli has wasted: http://www.cpt.univ-mrs.fr/%7Erovelli/vita.pdf Grants "Gravitation Quantique `a boucles", ANR grant: Euro 180,000 (2006 - 2009) "Relativite Generale", Institut Universitaire de France: Euro 76,225 (2004 - 2009) "Non perturbative Quantum Gravity", NSF Grant PHY-9900791: $95,631 (1999 - 2002) "Non perturbative Quantum Gravity", NSF Grant PHY-95-15506: $82,000 (1996 -1999) "Non perturbative Quantum Gravity", NSF Grant PHY-93-11465: $47,000 (1993 -1995) "Non perturbative Quantum Gravity", NSF Grant PHY-90-12099: $63,000 (1990-1993) Physics Department of the University of Pittsburgh, Grant PITT 2-11225: $6,670 (1990-1994) "US-Italy cooperative research: Non perturbative quantum gravity", NSF Grant: $19,000 (1990-1993) "US-Argentina cooperative research: General Relativity" NSF Grant: $11,000 (1992-1993) INFN Fellowship: Lit. 12,000,000 (1987-1988) "La forma dello spazio" INFN Grant: Lit. 5,000,000 (1993) "La forma dello spazio" University of Trento Grant: Lit. 4,000,000 (1993) Research Scholarship "Fondazione della Riccia": Lit. 5,000,000 (1987) Pentcho Valev |
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