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This is a rare book on a rare topic: it is about 'action' and the Principle of Least Action. A surprisingly well-kept secret, these ideas are at the heart of physical science and engineering. Physics is well known as being concerned with grand conservatory principles (e.g. the conservation of energy) but equally important is the optimisation principle (such as getting somewhere in the shortest time or with the least resistance). This text explains: why an optimisation principle underlies physics, what action is, what 'the Hamiltonian' is and how new insights into energy, space and time arise.

Physical science. --- Lanczos, Cornelius,

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Loin d’être simplement écarté par principe, loin même d’être un thème marginal ou une difficulté à éviter, le vide est tout au long du Moyen Âge l’objet de nombreuses analyses. Les contributions rassemblées dans cet ouvrage examinent quelques-uns des principaux développements qui prennent le vide comme objet ou comme moyen, dans le monde arabe comme dans le monde médiéval latin. Ils traitent du vide en dehors du monde comme du vide à l’intérieur du monde, des différentes définitions du vide, de son rapport au lieu ou bien au mouvement. Ils concernent la physique ou la cosmologie, mais aussi la biologie. Nous avons souhaité dédier ces études à Edward Grant qui, le premier, a mis en lumière l’étendue des problèmes scientifiques traités par les Médiévaux à l’aide du concept de vide.

Metaphysics --- Philosophy of science --- Aesthetics --- anno 500-1499 --- Physical science --- Science, Medieval. --- Vacuum. --- Philosophy of nature --- History --- Science, Medieval --- Vacuum --- Physique --- Sciences médiévales --- Vide (physique) --- Sciences physiques --- Sciences médiévales. --- Philosophie --- Histoire. --- High vacuum technique --- Vacuüm --- Vide (Physique) --- Emptiness (Philosophy) --- Sciences médiévales --- Vide (Philosophie) --- Philosophie de la nature --- Histoire --- Grant, Edward, --- Electric discharges through gases --- Medieval science --- Nature --- Nature, Philosophy of --- Natural theology --- Philosophy --- Physics --- Middle Ages, 500-1500 --- Philosophie. --- Sciences médiévales. --- Physical science - History - To 1500 --- Philosophy of nature - History - To 1500

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Religion and science. --- Religion et sciences --- 215 --- Christianity and science --- Geology --- Geology and religion --- Science --- Science and religion --- Godsdienst en wetenschap --- Religious aspects --- Religion and science --- religion --- physical science --- science and religion --- religion and science --- religious thought --- the beginning of the universe --- matter and energy --- physics --- cosmic evolution --- religion and philosophy --- life and intelligence in the universe --- creationism --- intelligent design --- theistic evolution --- Meher Baba --- cosmology

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This comprehensive and up-to-date dictionary of zoology covers all aspects of the study of animals. It is ideal for students and will be invaluable to amateur naturalists.

Zoology --- Zoologie --- Dictionaries --- Dictionnaires anglais --- Biology --- Biological Science Disciplines --- Natural Science Disciplines --- Disciplines and Occupations --- Health & Biological Sciences --- Zoology - General --- Natural Sciences --- Physical Sciences --- Discipline, Natural Science --- Disciplines, Natural Science --- Natural Science --- Natural Science Discipline --- Physical Science --- Science, Natural --- Science, Physical --- Sciences, Natural --- Sciences, Physical --- Biologic Sciences --- Biological Science --- Science, Biological --- Sciences, Biological --- Biological Sciences --- Life Sciences --- Biologic Science --- Biological Science Discipline --- Discipline, Biological Science --- Disciplines, Biological Science --- Life Science --- Science Discipline, Biological --- Science Disciplines, Biological --- Science, Biologic --- Science, Life --- Sciences, Biologic --- Sciences, Life

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Biological Science Disciplines --- Technology --- Technology, Industry, and Agriculture --- Natural Science Disciplines --- Disciplines and Occupations --- Technology, Industry, Agriculture --- Biotechnology --- Biotechnologies --- Natural Sciences --- Physical Sciences --- Discipline, Natural Science --- Disciplines, Natural Science --- Natural Science --- Natural Science Discipline --- Physical Science --- Science, Natural --- Science, Physical --- Sciences, Natural --- Sciences, Physical --- Arts, Industrial --- Industrial Arts --- Cloud Computing --- Biologic Sciences --- Biological Science --- Science, Biological --- Sciences, Biological --- Biological Sciences --- Life Sciences --- Biologic Science --- Biological Science Discipline --- Discipline, Biological Science --- Disciplines, Biological Science --- Life Science --- Science Discipline, Biological --- Science Disciplines, Biological --- Science, Biologic --- Science, Life --- Sciences, Biologic --- Sciences, Life --- Biotechnologie --- 094 Biologie --- Biotechnologie 663 --- Politiek 32 --- Nederland (492)