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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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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)

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Zwaartekracht, je hebt er dagelijks mee te maken en je kunt zelfs niet zonder. Toch sta je er waarschijnlijk niet zo vaak bij stil dat bijvoorbeeld voetballen alleen door die kracht mogelijk is. Gravitatie houdt niet alleen op aarde alles netjes op zijn plaats, maar zorgt er ook voor dat onze planeet rond de zon draait en een atmosfeer heeft die leven mogelijk maakt.

Didactics of secundary education --- gravimetric analysis --- Didactics of mathematics --- wiskunde --- zwaartekracht --- gravimetrie --- 485.3 --- 51 <075> --- 531.5 --- Fysica --- Zwaartekracht --- 510 --- 103500.jpg --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- Gravity. Gravitation. Pendulums. Ballistics --- 51 <075> Mathematics--Schoolboeken --- Mathematics--Schoolboeken --- didactiek secundair onderwijs - wiskunde --- Wiskunde --- Secundair onderwijs --- Wetten van Newton --- Relativiteitstheorie --- Wet van Newton

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Since Einstein first described them nearly a century ago, gravitational waves have been the subject of more sustained controversy than perhaps any other phenomenon in physics. These as yet undetected fluctuations in the shape of space-time were first predicted by Einstein's general theory of relativity, but only now, at the dawn of the twenty-first century, are we on the brink of finally observing them. Daniel Kennefick's landmark book takes readers through the theoretical controversies and thorny debates that raged around the subject of gravitational waves after the publication of Einstein's theory. The previously untold story of how we arrived at a settled theory of gravitational waves includes a stellar cast from the front ranks of twentieth-century physics, including Richard Feynman, Hermann Bondi, John Wheeler, Kip Thorne, and Einstein himself, who on two occasions avowed that gravitational waves do not exist, changing his mind both times. The book derives its title from a famously skeptical comment made by Arthur Stanley Eddington in 1922--namely, that "gravitational waves propagate at the speed of thought." Kennefick uses the title metaphorically to contrast the individual brilliance of each of the physicists grappling with gravitational-wave theory against the frustratingly slow progression of the field as a whole. Accessibly written and impeccably researched, this book sheds new light on the trials and conflicts that have led to the extraordinary position in which we find ourselves today--poised to bring the story of gravitational waves full circle by directly confirming their existence for the very first time.

Space and time. --- General relativity (Physics) --- Einstein field equations. --- Gravitational waves. --- Space of more than three dimensions --- Space-time --- Space-time continuum --- Space-times --- Spacetime --- Time and space --- Fourth dimension --- Infinite --- Metaphysics --- Philosophy --- Space sciences --- Time --- Beginning --- Hyperspace --- Relativity (Physics) --- Relativistic theory of gravitation --- Relativity theory, General --- Gravitation --- Physics --- Einstein's field equations --- Einstein's gravitational field equations --- Einstein's law of gravitation --- Field equations, Einstein --- Differential equations --- Field theory (Physics) --- Gravitational fields --- Gravitational radiation --- Gravity waves (Astrophysics) --- Radiation --- Waves --- Einstein field equations --- Gravitational waves --- Space and time --- 531.5 --- 531.5 Gravity. Gravitation. Pendulums. Ballistics --- Gravity. Gravitation. Pendulums. Ballistics

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This book is devoted to the teaching and learning of fluid mechanics. Fluid mechanics occupies a privileged position in the sciences; it is taught in various science departments including physics, mathematics, mechanical, chemical and civil engineering and environmental sciences, each highlighting a different aspect or interpretation of the foundation and applications of fluids. While scholarship in fluid mechanics is vast, expanding into the areas of experimental, theoretical and computational fluid mechanics, there is little discussion among scientists about the different possible ways of teaching this subject. We think there is much to be learned, for teachers and students alike, from an interdisciplinary dialogue about fluids. This volume therefore highlights articles which have bearing on the pedagogical aspects of fluid mechanics at the undergraduate and graduate level.

fluid dynamics education --- damped pendulums --- fluid drag --- fluid-structure interaction --- computational fluid dynamics --- outcomes competences --- hydraulic engineering --- hydraulic teaching --- active methodology --- droplet impact --- undergraduate education --- applications of fluids --- vortex formation length --- wake --- vortex shedding --- practical engineering education --- fluid mechanics --- learning and teaching --- laboratories --- data assimilation --- variational and sequential methods --- Kalman filtering --- forward sensitivity --- measurements fusion --- reduced order models --- quasi-geostrophic equations --- closure models --- Navier-Stokes equations --- Leray-Hopf weak solutions --- existence --- inquiry-based instruction --- science education --- teaching-learning sequences --- didactic transformation --- primary level --- CFD --- Julia --- Blasius --- Hiemenz --- Homann --- Falkner–Skan --- boundary-layer --- open water tank --- education --- n/a --- Falkner-Skan