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Les Fondements De La Mesure Du Temps Comment Les Frequences Atomiques Reglent Le
Download Les Fondements De La Mesure Du Temps Comment Les Frequences Atomiques Reglent Le full books in PDF, epub, and Kindle. Read online Les Fondements De La Mesure Du Temps Comment Les Frequences Atomiques Reglent Le ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Les fondements de la mesure du temps by : Claude Audoin
Download or read book Les fondements de la mesure du temps written by Claude Audoin and published by Elsevier Masson. This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: La mesure du temps fondée sur des propriétés atomiques est née en 1955, avec le premier étalon de fréquence à jet de césium. Depuis, les horloges atomiques ne cessent de progresser et sont au coeur de nombreuses activités, telles que les comparaisons de temps, l'unification mondiale de l'heure ou la recherche en astronomie, géodésie, géophysique, télécommunications, etc. Cet ouvrage fournira des réponses détaillées au lecteur intéressé par la mesure du temps appliquée aux divers domaines cités.
Book Synopsis LES FONDEMENTS DE LA MESURE DU TEMPS COMMENT LES FREQUENCES ATOMIQUES REGLENT LE by : Claude Audoin
Download or read book LES FONDEMENTS DE LA MESURE DU TEMPS COMMENT LES FREQUENCES ATOMIQUES REGLENT LE written by Claude Audoin and published by . This book was released on 1997-12-17 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Century of Space Science by : J.A. Bleeker
Download or read book The Century of Space Science written by J.A. Bleeker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1819 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most attractive features of the young discipline of Space Science is that many of the original pioneers and key players involved are still available to describe their field. Hence, at this point in history we are in a unique position to gain first-hand insight into the field and its development. To this end, The Century of Space Science, a scholarly, authoritative, reference book presents a chapter-by-chapter retrospective of space science as studied in the 20th century. The level is academic and focuses on key discoveries, how these were arrived at, their scientific consequences and how these discoveries advanced the thoughts of the key players involved. With over 90 world-class contributors, such as James Van Allen, Cornelis de Jager, Eugene Parker, Reimar Lüst, and Ernst Stuhlinger, and with a Foreword by Lodewijk Woltjer (past ESO Director General), this book will be immensely useful to readers in the fields of space science, astronomy, and the history of science. Both academic institutions and researchers will find that this major reference work makes an invaluable addition to their collection.
Book Synopsis Encyclopedia of 20th-century Technology by : Colin Hempstead
Download or read book Encyclopedia of 20th-century Technology written by Colin Hempstead and published by . This book was released on 2005 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Comprising 395 essays arranged alphabetically, mostly on individual objects, artifacts, techniques, and products, this is an up-to-date work of reference for all those involved in teaching or researching the history of twentieth-century technology."--Publisher's description.
Book Synopsis Combien dure une seconde ? by : Tony Jones
Download or read book Combien dure une seconde ? written by Tony Jones and published by L'Editeur : EDP Sciences. This book was released on 2003 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Savez-vous que la seconde est la plus précise des unités de mesure ? Les progrès réalisés dans la physique moderne ont permis d'atteindre cette précision extrême. Lorsque vous téléphonez à l'horloge parlante, c'est une horloge atomique qui vous répond! Une telle précision conduit à s'interroger sur ce qui sert de référence à la mesure du temps. Qu'est-ce que le temps universel ? Comment synchronise-t-on différentes horloges ? En répondant à ces questions, l'auteur vous fait voyager autour de la planète, en avion comme en voilier, mais aussi de la physique atomique jusqu'au système GPS, en passant par l'astrophysique et la relativité générale. La collection " Bulles de sciences " s'adresse à un large public et traite de problèmes scientifiques actuels. Les explications fondamentales sont privilégiées, mais sans discours professoral: vous lirez des textes vivants, parfois des romans, souvent des anecdotes...
Book Synopsis La mesure du temps by : Bernard Decaux
Download or read book La mesure du temps written by Bernard Decaux and published by FeniXX. This book was released on 1969-01-01T00:00:00+01:00 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cet ouvrage est une réédition numérique d’un livre paru au XXe siècle, désormais indisponible dans son format d’origine.
Book Synopsis Histoires de temps by : Yann Mambrini
Download or read book Histoires de temps written by Yann Mambrini and published by Editions Ellipses. This book was released on 2023-04-04 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis que l’homme a pris conscience de son existence, le temps est une de ses obsessions premières. Alors que nos montres et horloges nous rappellent chaque jour cet écoulement permanent et inéluctable, à une précision désormais atomique, il n’en a pas toujours été ainsi. Nous retraçons dans cet ouvrage l’épopée de l’humanité dans sa quête de la maîtrise du temps et de sa mesure. Depuis les clepsydres de Mésopotamie jusqu’aux horloges atomiques en passant par les cadrans solaires égyptiens et la découverte du quartz, l’Homme a puisé dans ses plus grands génies, mathématiciens, physiciens, artisans et astronomes pour asservir ce temps qui pourtant nous échappera toujours.
Book Synopsis Le règne du temps by : Emile Biémont
Download or read book Le règne du temps written by Emile Biémont and published by Académie royale de Belgique. This book was released on 2016-03-07 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis les temps les plus reculés, l’homme n’a eu de cesse de maî- triser son environnement et la découpe du temps fut l’une de ses quêtes. Les progrès furent lents, hésitants pendant de nombreux siècles pour s’accélérer terriblement durant les dernières décen- nies. Ce long récit montre comment les progrès de la recherche en physique et en astrophysique ont transformé en une courbe exponentielle une évolution initialement linéaire. Le présent ouvrage se veut multidisciplinaire, traitant de diffé- rents aspects de la problématique de la mesure du temps. Il s’in- téresse au problème de la découpe de celui-ci et aux instruments mis en œuvre pour son décompte. En particulier, il se polarise sur la « précision » des instruments de mesure et analyse le long cheminement historique lorsque l’on est passé des instruments les plus rudimentaires, tels que le gnomon, aux plus sophistiqués, tels que l’horloge atomique qui permet désormais de disséquer le temps avec une précision phénoménale. Spécialisé en spectroscopie et en astrophysique, Émile Biémont est docteur en Sciences et agrégé de l’enseignement supérieur. Il a enseigné dans les universités de Liège et de Mons, tout en conduisant une carrière de Directeur de Recherches au FRS-FNRS. Lau- réat de nombreuses distinctions et prix scientifiques, il a été membre d’un grand nom- bre de commissions, jurys et comités d’expertise nationaux et internationaux. Membre de la Classe des Sciences de l’Académie royale de Belgique depuis 1994, il est l’auteur de plus de 360 publications scientifiques dont une dizaine de livres. Parmi ceux-ci, on peut citer La Lumière et Effets lumineux et météores dans l’atmosphère ter- restre (Collection « Que sais-je ? »), L’ABCdaire du ciel (Flammarion) ou Rythmes du temps, Astronomie et Calendriers (De Boeck Université).
Book Synopsis Une histoire illustrée de la mesure du temps by : Jean Jandaly
Download or read book Une histoire illustrée de la mesure du temps written by Jean Jandaly and published by . This book was released on 2009 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans notre vie quotidienne il est aujourd'hui difficile de se passer d'une montre ou d'une horloge. Mais que savons-nous vraiment du principe qui gouverne ces chronomètres " ? Sur quoi repose donc leur régularité ? Pour l'expliquer, l'auteur nous invite ici à faire un peu d'histoire, soit finalement... à remonter le temps ! On découvrira l'origine des instruments et des machines que nous ont laissés en héritage des générations de physiciens dont les travaux aboutirent aux antiques cadrans solaires, aux clepsydres puis aux horloges à balancier. À l'heure actuelle, les horloges atomiques varient d'à peine quelques millionièmes de seconde par siècle ! Or, loin d'être vaine, pareille précision a d'innombrables applications, bien au-delà de la simple mesure du temps qui passe. Et, chose plus extraordinaire encore, ce sont des physiciens qui nous ont révélé la pluralité du temps en nous montrant qu'il ne s'écoule pas de la même façon selon la vitesse de déplacement de l'horloge ou la valeur du champ de gravité. Alors, le temps a-t-il une existence propre ou bien n'est-ce qu'un concept traduisant notre perception subjective du changement dont témoigne notre environnement ? C'est ainsi qu'on en viendra à s'interroger sur des notions comme la causalité et l'irréversibilité.
Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji
Download or read book Quantum Mechanics, Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Book Synopsis The Radiological Accident in Goiânia by : International Atomic Energy Agency
Download or read book The Radiological Accident in Goiânia written by International Atomic Energy Agency and published by . This book was released on 1988 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Government and authorities in Brazil were faced with a tragic accident in Goiânia resulting from the misuse of a strongly radioactive medical teletherapy source not under radiation protection surveillance. The present report is divided into four parts: a chronology of destruction of the source, discovery of the accident and initial response; a description of the human consequences and the dosimetry and treatment of seriously exposed and contaminated persons; an account of the assessment of the environmental contamination and the remedial actions taken; and observations and recommendations. Appendices and annexes give an assessment of the effectiveness of international co-operation in the emergency response, and provide further information on: public communications; radiological survey equipment; guidelines for the discharge of patients; radiological protection; chemical decontamination; and the lessons learned.
Book Synopsis UNESCO General History of Africa, Vol. I, Abridged Edition by : Jacqueline Ki-Zerbo
Download or read book UNESCO General History of Africa, Vol. I, Abridged Edition written by Jacqueline Ki-Zerbo and published by Univ of California Press. This book was released on 1990 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description
Book Synopsis Dynamique Non-linéaire Et Le Chaos by :
Download or read book Dynamique Non-linéaire Et Le Chaos written by and published by . This book was released on 1993 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Frequency Dictionary of French by : Deryle Lonsdale
Download or read book A Frequency Dictionary of French written by Deryle Lonsdale and published by Routledge. This book was released on 2009-03-25 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Frequency Dictionary of French is an invaluable tool for all learners of French, providing a list of the 5000 most frequently used words in the language. Based on a 23-million-word corpus of French which includes written and spoken material both from France and overseas, this dictionary provides the user with detailed information for each of the 5000 entries, including English equivalents, a sample sentence, its English translation, usage statistics, and an indication of register variation. Users can access the top 5000 words either through the main frequency listing or through an alphabetical index. Throughout the frequency listing there are thematically-organized lists of the top words from a variety of key topics such as sports, weather, clothing, and family terms. An engaging and highly useful resource, the Frequency Dictionary of French will enable students of all levels to get the most out of their study of French vocabulary. Former CD content is now available to access at www.routledge.com/9780415775311 as support material. Designed for use by corpus and computational linguists it provides the full text in a format that researchers can process and turn into suitable lists for their own research work. Deryle Lonsdale is Associate Professor in the Linguistics and English Language Department at Brigham Young University (Provo, Utah). Yvon Le Bras is Associate Professor of French and Department Chair of the French and Italian Department at Brigham Young University (Provo, Utah).
Book Synopsis Solid Propellant Rocket Research by : Martin Summerfield
Download or read book Solid Propellant Rocket Research written by Martin Summerfield and published by Elsevier. This book was released on 2013-11-11 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid Propellant Rocket Research
Download or read book El Niño written by Bruno Voituriez and published by UNESCO. This book was released on 2000 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: El Nino, caprice of the heavens, scapegoat for every calamity? The general public cannot really understand what is behind the El Nino phenomenon. The book offers a tour of the Earth's climate to understand one of its normal but extreme components.
Book Synopsis An Introduction to Differential Manifolds by : Jacques Lafontaine
Download or read book An Introduction to Differential Manifolds written by Jacques Lafontaine and published by Springer. This book was released on 2015-07-29 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.
