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Quantum gravity. --- 530.145 --- 531.5 --- Quantum theory --- Gravity. Gravitation. Pendulums. Ballistics --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- 530.145 Quantum theory --- Theory of relativity. Unified field theory

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Astrophysics --- Classical mechanics. Field theory --- Gravity --- Gravité --- 531.5 --- 521 --- Geophysics --- Mechanics --- Pendulum --- Gravity. Gravitation. Pendulums. Ballistics --- Theoretical astronomy. Celestial mechanics --- 521 Theoretical astronomy. Celestial mechanics --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- Gravité

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This book invites the reader to understand our Universe, not just marvel at it. From the clock-like motions of the planets to the catastrophic collapse of a star into a black hole, gravity controls the Universe. Gravity is central to modern physics, helping to answer the deepest questions about the nature of time, the origin of the Universe and the unification of the forces of nature. Linking key experiments and observations through careful physical reasoning, the author builds the reader's insight step-by-step from simple but profound facts about gravity on Earth to the frontiers of research. Topics covered include the nature of stars and galaxies, the mysteries of dark matter and dark energy, black holes, gravitational waves, inflation and the Big Bang. Suitable for general readers and for undergraduate courses, the treatment uses only high-school level mathematics, supplemented by optional computer programs, to explain the laws of physics governing gravity.

Gravitation. --- Gravity. --- Geophysics --- Mechanics --- Pendulum --- Field theory (Physics) --- Matter --- Physics --- Antigravity --- Centrifugal force --- Relativity (Physics) --- Properties --- Gravitation --- Gravity --- 531.5 --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- Gravity. Gravitation. Pendulums. Ballistics

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Astrophysics --- 530.12 --- 531.5 --- Gravitation --- -Field theory (Physics) --- Matter --- Physics --- Antigravity --- Centrifugal force --- Relativity (Physics) --- Relativity principle --- Gravity. Gravitation. Pendulums. Ballistics --- Congresses --- Properties --- Congresses. --- -Relativity principle --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- 530.12 Relativity principle --- -531.5 Gravity. Gravitation. Pendulums. Ballistics --- Gravitation.

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One appealing feature of string theory is that it provides a theory of quantum gravity. Gravity and Strings is a self-contained, pedagogical exposition of this theory, its foundations and its basic results. In Part I, the foundations are traced back to the very early special-relativistic field theories of gravity, showing how such theories lead to general relativity. Gauge theories of gravity are then discussed and used to introduce supergravity theories. In Part II, some of the most interesting solutions of general relativity and its generalizations are studied. The final Part presents and studies string theory from the effective action point of view, using the results found earlier in the book as background. This 2004 book will be useful as a reference book for graduate students and researchers, as well as a complementary textbook for courses on gravity, supergravity and string theory.

Quantum gravity --- String models --- Gravité quantique --- Modèles des cordes vibrantes (Physique nucléaire) --- Quantum gravity. --- String models. --- 531.5 --- 530.145 --- Models, String --- String theory --- Nuclear reactions --- Gravity, Quantum --- General relativity (Physics) --- Gravitation --- Quantum theory --- Gravity. Gravitation. Pendulums. Ballistics --- 530.145 Quantum theory --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- Gravité quantique --- Modèles des cordes vibrantes (Physique nucléaire)