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On May 27, 6:55*am, Pentcho Valev wrote:
http://www.pitt.edu/~jdnorton/homepa...ml#forthcoming "Einstein's Special Theory of Relativity and the Problems in the Electrodynamics of Moving Bodies that Led him to it." in Cambridge Companion to Einstein, M. Janssen and C. Lehner, eds., Cambridge University Press. Preprint. John Norton: "Einstein could not see how to formulate a fully relativistic electrodynamics merely using his new device offield transformations. So he considered the possibility of modifying Maxwell's electrodynamics in order to bring it into accord with an emission theory of light, such as Newton had originally conceived. There was some inevitability in these attempts, as long as he held to classical (Galilean) kinematics. Imagine that some emitter sends out a light beam at c. According to this kinematics, an observer who moves past at v in the opposite direction, will see the emitter moving at v and the light emitted at c+v. This last fact is the defining characteristic of an emission theory of light: the velocity of the emitter is added vectorially to the velocity of light emitted....If an emission theory can be formulated as afieldtheory, it would seem to be unable to determine the future course of processes from their state in the present. AS LONG AS EINSTEIN EXPECTED A VIABLE THEORY LIGHT, ELECTRICITY AND MAGNETISM TO BE AFIELDTHEORY, these sorts of objections would render an EMISSION THEORY OF LIGHT INADMISSIBLE." http://www.perimeterinstitute.ca/pdf...09145525ca.pdf Albert Einstein: "I consider it entirely possible that PHYSICS CANNOT BE BASED UPON THEFIELDCONCEPT, 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." http://www.academie-sciences.fr/memb...tein_eloge.pdf Louis de Broglie: "Tout d'abord toute idée de grain se trouvait expulsée de la théorie de la Lumière : celle-ci prenait la forme d'une théorie du champ où le rayonnement était représenté par une répartition continue dans l'espace de grandeurs évoluant continûment au cours du temps sans qu'il fût possible de distinguer, dans les domaines spatiaux au sein desquels évoluait le champ lumineux, de très petites régions singulières où le champ serait très fortement concentré et qui fournirait une image du type corpusculaire. Ce caractère à la fois continu et ondulatoire de la lumière se trouvait prendre une forme très précise dans la théorie de Maxwell où le champ lumineux venait se confondre avec un certain type de champ électromagnétique." Pentcho Valev |
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On Jun 13, 9:42*pm, Pentcho Valev wrote:
On May 27, 6:55*am, Pentcho Valev wrote: http://www.pitt.edu/~jdnorton/homepa...ml#forthcoming "Einstein's Special Theory of Relativity and the Problems in the Electrodynamics of Moving Bodies that Led him to it." in Cambridge Companion to Einstein, M. Janssen and C. Lehner, eds., Cambridge University Press. Preprint. John Norton: "Einstein could not see how to formulate a fully relativistic electrodynamics merely using his new device offield transformations. So he considered the possibility of modifying Maxwell's electrodynamics in order to bring it into accord with an emission theory of light, such as Newton had originally conceived. There was some inevitability in these attempts, as long as he held to classical (Galilean) kinematics. Imagine that some emitter sends out a light beam at c. According to this kinematics, an observer who moves past at v in the opposite direction, will see the emitter moving at v and the light emitted at c+v. This last fact is the defining characteristic of an emission theory of light: the velocity of the emitter is added vectorially to the velocity of light emitted....If an emission theory can be formulated as afieldtheory, it would seem to be unable to determine the future course of processes from their state in the present. AS LONG AS EINSTEIN EXPECTED A VIABLE THEORY LIGHT, ELECTRICITY AND MAGNETISM TO BE A FIELD THEORY, these sorts of objections would render an EMISSION THEORY OF LIGHT INADMISSIBLE." http://www.perimeterinstitute.ca/pdf...09145525ca.pdf 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." http://www.academie-sciences.fr/memb...tein_eloge.pdf Louis de Broglie: "Tout d'abord toute idée de grain se trouvait expulsée de la théorie de la Lumière : celle-ci prenait la forme d'une théorie du champ où le rayonnement était représenté par une répartition continue dans l'espace de grandeurs évoluant continûment au cours du temps sans qu'il fût possible de distinguer, dans les domaines spatiaux au sein desquels évoluait le champ lumineux, de très petites régions singulières où le champ serait très fortement concentré et qui fournirait une image du type corpusculaire. Ce caractère à la fois continu et ondulatoire de la lumière se trouvait prendre une forme très précise dans la théorie de Maxwell où le champ lumineux venait se confondre avec un certain type de champ électromagnétique." http://www.nybooks.com/articles/20279 Lee Smolin: "It is also disappointing that none of the biographers mention the writings that lead John Stachel, the founding editor of the Einstein Papers project, to speak of "the other Einstein." These writings look beyond his struggles with the unified field theory to "the other possibility [which] leads in my opinion to a renunciation of the space-time continuum..." Do all those honest biographers have a serious reason to avoid "the other Einstein" problem? Something to do with "NOTHING WILL REMAIN of my whole castle in the air, including the theory of gravitation, but also nothing of the rest of contemporary physics"? Pentcho Valev |
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Thread | Thread Starter | Forum | Replies | Last Post |
FIELD CONCEPT OF LIGHT, EMISSION THEORY, END OF PHYSICS | Pentcho Valev | Astronomy Misc | 5 | July 10th 08 08:24 PM |
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