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This volume provides a fascinating snapshot of the future of physics, covering fundamental physics, at the frontiers of research. It comprises a wide variety of contributions from leading thinkers in the field, inspired by the pioneering work of John A. Wheeler. Quantum theory represents a unifying theme within the book, along with topics such as the nature of physical reality, the arrow of time, models of the universe, superstrings, gravitational radiation, quantum gravity and cosmic inflation. Attempts to formulate a final unification of physics are discussed, along with the existence of hidden dimensions of space, space-time singularities, hidden cosmic matter, and the strange world of quantum technology.

Quantum theory. --- Cosmology. --- Wheeler, John Archibald,

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Physics --- Astronomy --- Physicists --- Physique --- Astronomie --- Physiciens --- History. --- History. --- Histoire --- Histoire --- Biographie --- Wheeler, John Archibald,

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Observational and experimental data pertaining to gravity and cosmology are changing our view of the Universe. General relativity is a fundamental key for the understanding of these observations and its theory is undergoing a continuing enhancement of its intersection with observational and experimental data. These data include direct observations and experiments carried out in our solar system, among which there are direct gravitational wave astronomy, frame dragging and tests of gravitational theories from solar system and spacecraft observations. This book explores John Archibald Wheeler's seminal and enduring contributions in relativistic astrophysics and includes: the General Theory of Relativity and Wheeler's influence; recent developments in the confrontation of relativity with experiments; the theory describing gravitational radiation, and its detection in Earth-based and space-based interferometer detectors as well as in Earth-based bar detectors; the mathematical description of the initial value problem in relativity and applications to modeling gravitational wave sources via computational relativity; the phenomenon of frame dragging and its measurement by satellite observations. All of these areas were of direct interest to Professor John A. Wheeler and were seminally influenced by his ideas.

General relativity (Physics). --- Wheeler, John Archibald, 1911-2008 -- Influence. --- Wheeler, John Archibald, 1911-2008 -- Knowledge -- General relativity (Physics). --- General relativity (Physics) --- Gravitational fields --- Astrophysics --- Astronomy & Astrophysics --- Physics --- Physical Sciences & Mathematics --- Atomic Physics --- Wheeler, John Archibald, --- Relativistic theory of gravitation --- Relativity theory, General --- Hui-le, --- Huile, --- Uiler, Dzhon Archibalʹd, --- Wheeler, J. A. --- Classical and Quantum Gravitation, Relativity Theory. --- Cosmology. --- Astrophysics and Astroparticles. --- Gravitation --- Relativity (Physics) --- Gravitation. --- Astrophysics. --- Astronomical physics --- Astronomy --- Cosmic physics --- Deism --- Metaphysics --- Field theory (Physics) --- Matter --- Antigravity --- Centrifugal force --- Properties --- Influence. --- Knowledge

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In this essay collection, leading physicists, philosophers, and historians attempt to fill the empty theoretical ground in the foundations of information and address the related question of the limits to our knowledge of the world. Over recent decades, our practical approach to information and its exploitation has radically outpaced our theoretical understanding - to such a degree that reflection on the foundations may seem futile. But it is exactly fields such as quantum information, which are shifting the boundaries of the physically possible, that make a foundational understanding of information increasingly important. One of the recurring themes of the book is the claim by Eddington and Wheeler that information involves interaction and putting agents or observers centre stage. Thus, physical reality, in their view, is shaped by the questions we choose to put to it and is built up from the information residing at its core. This is the root of Wheeler’s famous phrase “it from bit.” After reading the stimulating essays collected in this volume, readers will be in a good position to decide whether they agree with this view.

Spintronics. --- History and Philosophical Foundations of Physics. --- Quantum Computing. --- Quantum Information Technology, Spintronics. --- Eddington, Arthur Stanley, --- Wheeler, John Archibald, --- Hui-le, --- Huile, --- Uiler, Dzhon Archibalʹd, --- Wheeler, J. A. --- Eddington, A. S. --- Eddington, Arthur, --- אדינגטון, א. ס. --- Physics. --- Philosophy and science. --- Quantum computers. --- Philosophy of Science. --- Knowledge, Theory of. --- Criticism and interpretation. --- Knowledge --- General relativity (Physics) --- Epistemology --- Theory of knowledge --- Philosophy --- Psychology --- Science --- Philosophy. --- Normal science --- Philosophy of science --- Fluxtronics --- Magnetoelectronics --- Spin electronics --- Spinelectronics --- Microelectronics --- Nanotechnology --- Computers --- Science and philosophy --- Natural philosophy --- Philosophy, Natural --- Physical sciences --- Dynamics