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Les Relativites Espace Temps Gravitation
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Book Synopsis Les relativités : espace, temps, gravitation by : Michel Le Bellac
Download or read book Les relativités : espace, temps, gravitation written by Michel Le Bellac and published by . This book was released on 2015-01-29 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: En 1905, la relativité restreinte bouleverse nos conceptions de l'espace et du temps : il n'existe pas de temps universel, et une conséquence spectaculaire est le paradoxe des jumeaux vérifié quotidiennement par le système GPS. Dix années après la relativité restreinte, la relativité générale interprète la gravitation comme une propriété géométrique de l'espace-temps. Il n'existe plus d'espace absolu où l'on pourrait disposer étoiles et galaxies et l'espace-temps est déformé au voisinage d'objets astrophysiques compacts. Dans un environnement de gravité forte, le temps diffère radicalement du temps usuel et la lumière peut faire du surplace ou même se retrouver piégée. Ce livre expose les concepts fondamentaux introduits par Einstein et il les confronte aux expériences les plus récentes en physique des particules élémentaires et en astrophysique. Le lecteur découvrira comment la relativité décrit ces objets étranges et fascinants que sont les étoiles à neutrons, les trous noirs ou les ondes gravitationnelles, et comment elle rend compte de l'histoire de l'Univers. Extrait de la préface de Thibault Damour : «... l'exposé des théories est fait d'une façon très vivante, et en prise avec l'univers conceptuel et technologique dans lequel nous baignons tous aujourd'hui.»
Book Synopsis Espace, temps et gravitation by : Sir Arthur Stanley Eddington
Download or read book Espace, temps et gravitation written by Sir Arthur Stanley Eddington and published by . This book was released on 1921 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis La gravité quantique sans peine by : René Friedrich
Download or read book La gravité quantique sans peine written by René Friedrich and published by BoD – Books on Demand. This book was released on 2024-07-09 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Un large éventail de suggestions innovantes, pour tous ceux qui s'intéressent à la physique. Pas de théories complexes ni de spéculations mathématiques, mais des possibilités directes de simplification, afin que la relativité générale y compris la gravité quantique deviennent accessibles à un large public. Des connaissances préalables de la relativité restreinte sont préconisées, mais celle-ci est aussi résumée dans le chapitre d'introduction. Contenu : - La relativité restreinte en quelques mots - La nature du temps - L'erreur de l'espace-temps continu - La gravité quantique par l'élimination de l'espace-temps - Trous noirs : l'infini à l'horizon des événements - Attraction et répulsion gravitationnelles - Comprendre la dualité onde-particule de la lumière
Book Synopsis Espace, temps et gravitation by : Arthur Stanley Eddington
Download or read book Espace, temps et gravitation written by Arthur Stanley Eddington and published by . This book was released on 2010 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis La relativité dans tous ses états by : Laurent Nottale
Download or read book La relativité dans tous ses états written by Laurent Nottale and published by FeniXX. This book was released on 2000-01-01T00:00:00+01:00 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Il y a plus de quatre siècles, après que Copernic eut ébranlé l’idée d’une position absolue, Galilée découvrait que « le mouvement est comme rien » : il n’existe pas en soi, un corps ne se meut que par rapport à un autre corps. Au début du XXe siècle, Poincaré et Enstein franchissaient une nouvelle étape avec la relativité restreinte, où l’espace et le temps ne sont plus séparés. Puis Einstein inventait une nouvelle manière de penser avec la relativité généralisée. Celle-ci n’est plus seulement une théorie des objets dans un cadre préétabli. Elle offre une conception dynamique de la géométrie d’un espace-temps courbe et dépendant de son contenu matériel. La gravitation n’y existe plus en soi, mais devient, elle-même, relative au choix du système de coordonnées. La relativité a-t-elle dit son dernier mot ? Son principe exige que les lois de la nature soient valides, quel que soit le système de référence. Mais les lois de la mécanique quantique ne l’ont-elles pas mise en défaut vers les échelles microscopiques ? Laurent Nottale suggère d’envisager les effets quantiques comme la manifestation d’une relativité étendue aux changements d’échelle. En passant du macroscopique au microscopique, l’espace-temps, de courbe, deviendrait fractal. Un essai à la fois très accessible et profondément novateur.
Download or read book Gravitation written by Marc Lachièze-Rey and published by Flammarion. This book was released on 2023-04-19T00:00:00+02:00 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quoi de plus familier que la chute des corps ? Et quoi de plus éloigné de notre intuition que les trous noirs ou les ondes gravitationnelles ? Tous relèvent pourtant du même phénomène : la gravitation. Si l’on doit à Newton la « gravitation universelle », qui ira de succès en succès au fil des siècles, la théorie actuelle est l’œuvre d’Einstein, qui adopta un point de vue radicalement différent : la relativité générale identifie la gravitation à la forme d’une nouvelle entité, l’espace-temps. Dans cette brillante synthèse, l’auteur nous conte comment notre compréhension de la gravitation s’est forgée, en s’arrêtant sur la conception du monde proposée par Einstein, si révolutionnaire qu’elle bouleversa tout notre cadre de pensée. Il montre de plus que la relativité générale n’est sans doute pas la « théorie ultime » de la gravitation, comme l’illustrent ses insuffisances face aux cas extrêmes révélés par la cosmologie, sans oublier son incompatibilité avec la physique quantique. Quelles sont les pistes de recherche aujourd’hui ? Comment les tester ? La science fait face à un immense défi.
Book Synopsis Temps, espace, relativité by : André Metz
Download or read book Temps, espace, relativité written by André Metz and published by . This book was released on 1928 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Espace, temps et gravitation by : Arthur Stanley Eddington
Download or read book Espace, temps et gravitation written by Arthur Stanley Eddington and published by . This book was released on 1921 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space, Time and Gravitation by : Sir Arthur Stanley Eddington
Download or read book Space, Time and Gravitation written by Sir Arthur Stanley Eddington and published by . This book was released on 1920 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Les théories relativistes de la gravitation by : Centre national de la recherche scientifique (France)
Download or read book Les théories relativistes de la gravitation written by Centre national de la recherche scientifique (France) and published by . This book was released on 1962 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Relativités et quanta clarifiés by : Bernard Schaeffer
Download or read book Relativités et quanta clarifiés written by Bernard Schaeffer and published by Editions Publibook. This book was released on 2007 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exact Space-Times in Einstein's General Relativity by : Jerry B. Griffiths
Download or read book Exact Space-Times in Einstein's General Relativity written by Jerry B. Griffiths and published by Cambridge University Press. This book was released on 2009-10-15 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Einstein's theory of general relativity is a theory of gravity and, as in the earlier Newtonian theory, much can be learnt about the character of gravitation and its effects by investigating particular idealised examples. This book describes the basic solutions of Einstein's equations with a particular emphasis on what they mean, both geometrically and physically. Concepts such as big bang and big crunch-types of singularities, different kinds of horizons and gravitational waves, are described in the context of the particular space-times in which they naturally arise. These notions are initially introduced using the most simple and symmetric cases. Various important coordinate forms of each solution are presented, thus enabling the global structure of the corresponding space-time and its other properties to be analysed. The book is an invaluable resource both for graduate students and academic researchers working in gravitational physics.
Book Synopsis Espace, temps et gravitation by : Arthur Stanley Eddington (Astronomist)
Download or read book Espace, temps et gravitation written by Arthur Stanley Eddington (Astronomist) and published by . This book was released on 1921 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Espace, temps et gravitation by : Arthur Stanley Eddington (Astronom)
Download or read book Espace, temps et gravitation written by Arthur Stanley Eddington (Astronom) and published by . This book was released on 1924 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book La Relativité written by Paul Couderc and published by . This book was released on 1941 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space and Time in Contemporary Physics by : Moritz Schlick
Download or read book Space and Time in Contemporary Physics written by Moritz Schlick and published by . This book was released on 1920 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space Time and Gravitation - an Outline of the General Relativity Theory by : Arthur Eddington
Download or read book Space Time and Gravitation - an Outline of the General Relativity Theory written by Arthur Eddington and published by . This book was released on 2013-03-26 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: By his theory of relativity Albert Einstein has provoked a revolution of thought in physical science.The achievement consists essentially in this: Einstein has succeeded in separating far more completely than hitherto the share of the observer and the share of external nature in the things we see happen. The perception of an object by an observer depends on his own situation and circumstances; for example, distance will make it appear smaller and dimmer. We make allowance for this almost unconsciously in interpreting what we see. But it now appears that the allowance made for the motion of the observer has hitherto been too crude a fact overlooked because in practice all observers share nearly the same motion, that of the earth. Physical space and time are found to be closely bound up with this motion of the observer; and only an amorphous combination of the two is left inherent in the external world. When space and time are relegated to their proper source the observer the world of nature which remains appears strangely unfamiliar; but it is in reality simplified, and the underlying unity of the principal phenomena is now clearly revealed. The deductions from this new outlook have, with one doubtful exception, been confirmed when tested by experiment.It is my aim to give an account of this work without introducing anything very technical in the way of mathematics, physics, or philosophy. The new view of space and time, so opposed to our habits of thought, must in any case demand unusual mental exercise. The results appear strange; and the incongruity is not without a humorous side. For the first nine chapters the task is one of interpreting a clear-cut theory, accepted in all its essentials by a large and growing school of physicists although perhaps not everyone would accept the author's views of its meaning.Chapters x and xi deal with very recent advances, with regard to which opinion is more fluid. As for the last chapter, containing the author's speculations on the meaning of nature, since it touches on the rudiments of a philosophical system, it is perhaps too sanguine to hope that it can ever be other than controversial.A non-mathematical presentation has necessary limitations; and the reader who wishes to learn how certain exact results follow from Einstein's, or even Newton's, law of gravitation is bound to seek the reasons in a mathematical treatise. But this limitation of range is perhaps less serious than the limitation of intrinsic truth. There is a relativity of truth, as there is a relativity of space. "For is and is-not though with Rule and Line and up-and-down without, I could define."Alas! It is not so simple. We abstract from the phenomena that which is peculiar to the position and motion of the observer; but can we abstract that which is peculiar to the limited imagination of the human brain? We think we can, but only in the symbolism of mathematics. As the language of a poet rings with a truth that eludes the clumsy explanations of his commentators, so the geometry of relativity in its perfect harmony expresses a truth of form and type in nature, which my bowdlerized version misses.But the mind is not content to leave scientific Truth in a dry husk of mathematical symbols, and demands that it shall be alloyed with familiar images. The mathematician, who handles x so lightly, may fairly be asked to state, not indeed the inscrutable meaning of x in nature, but the meaning which x conveys to him. Although primarily designed for readers without technical knowledge of the subject, it is hoped that the book may also appeal to those who have gone into the subject more deeply. A few notes have been added in the Appendix mainly to bridge the gap between this and more mathematical treatises, and to indicate the points of contact between the argument in the text and the parallel analytical investigation. Sir Arthur Stanley Eddington
