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« Lorsqu’il est dit que le thème particulier de notre temps et la mission des générations actuelles consiste en une tentative énergétique pour ordonner le monde à partir du point de vue de la vie, il y a un sérieux risque d’être mal compris. […] On a vécu pour la religion, pour la science, pour la morale, pour l’économie ; on a même vécu pour servir le fantôme de l’art et du plaisir ; on n’a juste jamais essayé de vivre délibérément pour la vie. Heureusement qu’on l’a toujours plus ou moins fait, mais non délibérément ; chaque fois que l’homme s’en est aperçu, il en a eu honte et a ressenti un étrange remords. Ce phénomène de l’histoire humaine est par trop surprenant pour ne pas mériter une méditation. » Paru en 1923, soit bien avant sa célèbre Révolte des masses (1930), Le Thème de notre temps est l’un des textes les plus prophétiques d’Ortega y Gasset (1883-1955).
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A handsome annotated edition of Einstein's celebrated book on relativityAfter completing the final version of his general theory of relativity in November 1915, Albert Einstein wrote Relativity. Intended for a popular audience, the book remains one of the most lucid explanations of the special and general theories ever written. This edition of Einstein's celebrated book features an authoritative English translation of the text along with commentaries by Hanoch Gutfreund and Jürgen Renn that examine the evolution of Einstein's thinking and cast his ideas in a modern context. Providing invaluable insight into one of the greatest scientific minds of all time, the book also includes a unique survey of the introductions from past editions, covers from selected early editions, a letter from Walther Rathenau to Einstein discussing the book, and a revealing sample from Einstein's original handwritten manuscript.
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Religion and science --- Relativity (Physics) --- Einstein, Albert,
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This book provides a concise introduction to both the special theory of relativity and the general theory of relativity. The format is chosen to provide the basis for a single semester course which can take the students all the way from the foundations of special relativity to the core results of general relativity: the Einstein equation and the equations of motion for particles and light in curved spacetime. To facilitate access to the topics of special and general relativity for science and engineering students without prior training in relativity or geometry, the relevant geometric notions are also introduced and developed from the ground up. Students in physics, mathematics or engineering with an interest to learn Einstein's theories of relativity should be able to use this book already in the second semester of their third year. The book could also be used as the basis of a graduate level introduction to relativity for students who did not learn relativity as part of their undergraduate training.
Space and time. --- Gravitation. --- Special relativity (Physics) --- General relativity (Physics) --- Astrophysics. --- SCIENCE / Physics / Astrophysics.
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La 4e de couverture indique : "La relativité générale vient tout juste de fêter son centième anniversaire, et la récente détection des ondes gravitationnelles par les consortiums LIGO et Virgo a confirmé de façon éclatante la prédiction d'Einstein : des masses en accélération peuvent produire une oscillation de l'espace-temps se propageant à la vitesse de la lumière. Destiné à tous les esprits curieux, cet ouvrage présente une réflexion plurielle sur la nature de la gravité. L'enquête, philosophique, historique et scientifique, aborde tous les domaines où la gravitation opère, de la cosmologie quantique à la matière noire et aux trous noirs."
Gravitation. --- Relativity (Physics) --- Relativité (physique) --- Gravité --- --Gravitation. --- Relativité (physique)
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Einstein field equations --- Special relativity (Physics) --- Space and time
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Differential equations, Partial. --- Geometry, Riemannian. --- General relativity (Physics) --- Mathematics.
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Ron Cowen offers a sweeping account of the century of experimentation that has consistently confirmed Einstein's general theory of relativity. He shows how we got from Eddington's pivotal observations of the 1919 eclipse to the Event Horizon Telescope, aimed at starlight wrapping around the black hole at our galaxy's center.
General relativity (Physics) --- Gravity. --- Quantum theory. --- Astrophysics. --- Gravitation.
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Ron Cowen offers a sweeping account of the century of experimentation that has consistently confirmed Einstein's general theory of relativity. He shows how we got from Eddington's pivotal observations of the 1919 eclipse to the Event Horizon Telescope, aimed at starlight wrapping around the black hole at our galaxy's center.
General relativity (Physics) --- Gravity. --- Quantum theory. --- Astrophysics. --- Gravitation.
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Interpreting general relativity relies on a proper description of non-inertial frames and Dirac observables. This book describes global non-inertial frames in special and general relativity. The first part covers special relativity and Minkowski space time, before covering general relativity, globally hyperbolic Einstein space-time, and the application of the 3+1 splitting method to general relativity. The author uses a Hamiltonian description and the Dirac-Bergmann theory of constraints to show that the transition between one non-inertial frame and another is a gauge transformation, extra variables describing the frame are gauge variables, and the measureable matter quantities are gauge invariant Dirac observables. Point particles, fluids and fields are also discussed, including how to treat the problems of relative times in the description of relativistic bound states, and the problem of relativistic centre of mass. Providing a detailed description of mathematical methods, the book is perfect for theoretical physicists, researchers and students working in special and general relativity.
Dirac equation. --- Wave equation. --- Quantum field theory. --- General relativity (Physics)
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