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Etude Theorique Et Experimentale De La Propagation Des Ondes Hyperfrequence Tm Dans Une Structure Periodique
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Book Synopsis Étude théorique et expérimentale de la propagation des ondes hyperfréquence TM dans une structure périodique by : Pierrette Fardeau
Download or read book Étude théorique et expérimentale de la propagation des ondes hyperfréquence TM dans une structure périodique written by Pierrette Fardeau and published by . This book was released on 1963 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Étude théorique et expérimentale de la propagation des ondes hyperfréquences en milieu confiné et urbain by : Philippe Mariage
Download or read book Étude théorique et expérimentale de la propagation des ondes hyperfréquences en milieu confiné et urbain written by Philippe Mariage and published by . This book was released on 1992 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: De nombreuses applications des radiocommunications utilisant une porteuse hyperfréquence font intervenir des phénomènes de propagation par chemins multiples. La planification des systèmes de télécommunication envisagés dans ce travail nécessite la réalisation d'outils de prédiction. Ceux-ci ont été élaborés en utilisant une méthode numérique haute fréquence: la Théorie Uniforme de la Diffraction (TUD). Dans cette théorie, le concept de rayon de l'Optique Géométrique est étendu aux phénomènes de diffraction, ce qui permet de prendre en compte les trajets multiples suivis par l'onde rayonnée. Après avoir étudié au préalable et de manière approfondie la configuration canonique du dièdre électrique faiblement conducteur à bord droit, nous avons effectué des comparaisons théoriques et numériques entre les méthodes de prédictions approchées classiques des pertes en milieu urbain et des modèles basés sur la T.U.D. Nous avons également modélisé le cas d'une bifurcation entre deux couloirs de bâtiment, le but étant de définir le couplage moyen obtenu au passage de ce type de transition. Dans le cadre de la propagation en tunnel, nous avons envisagé le cas important de la présence d'une rame située entre l'émetteur et le récepteur. La perturbation apportée par le masquage de cette rame sur le niveau moyen du champ est analysée en considérant le cas d'un rétrécissement localisé de la section droite du tunnel
Book Synopsis Contribution à l'étude théorique et expérimentale de la vitesse de propagation des ondes électromagnétiques dans le sol by : Jacques Fontaine
Download or read book Contribution à l'étude théorique et expérimentale de la vitesse de propagation des ondes électromagnétiques dans le sol written by Jacques Fontaine and published by . This book was released on 1966 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Invention of the Traveling-wave Tube by : Rudolf Kompfner
Download or read book The Invention of the Traveling-wave Tube written by Rudolf Kompfner and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Ionization of Gases by Collision by : Sir John Townsend
Download or read book The Theory of Ionization of Gases by Collision written by Sir John Townsend and published by . This book was released on 1910 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Avalanche Transit-time Devices by : George I. Haddad
Download or read book Avalanche Transit-time Devices written by George I. Haddad and published by Modern Frontiers in Applied Sc. This book was released on 1973 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Download or read book Color Television Receivers written by and published by . This book was released on 1980 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report to the President on investigation no. 332-95 under section 332 of the Tariff Act of 1930, as amended.
Book Synopsis Experimental Chaos by : Stefano Boccaletti
Download or read book Experimental Chaos written by Stefano Boccaletti and published by A I P Press. This book was released on 2004-12-14 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8th Experimental Chaos Conference again demonstrated the broad spectrum of areas where nonlinear dynamics plays an important role, such as circuits, hydrodynamics, optics, chemistry, fracture dynamics, neuroscience, and cognitive science. Additional contributions outline the trends for development and application of concepts and techniques of nonlinear dynamics.
Book Synopsis Nonlinear Optical Materials by : Jerome V. Moloney
Download or read book Nonlinear Optical Materials written by Jerome V. Moloney and published by Springer Science & Business Media. This book was released on 1998-08-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical methods play a significant role in the rapidly growing field of nonlinear optical materials. This volume discusses a number of successful or promising contributions. The overall theme of this volume is twofold: (1) the challenges faced in computing and optimizing nonlinear optical material properties; and (2) the exploitation of these properties in important areas of application. These include the design of optical amplifiers and lasers, as well as novel optical switches. Research topics in this volume include how to exploit the magnetooptic effect, how to work with the nonlinear optical response of materials, how to predict laser-induced breakdown in efficient optical devices, and how to handle electron cloud distortion in femtosecond processes.
Book Synopsis Something New Under the Sun by : Helen Gavaghan
Download or read book Something New Under the Sun written by Helen Gavaghan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this, the first history of artificial satellites and their uses, Helen Gavaghan shows how the idea of putting an object in orbit around the earth changed from science fiction to indispensable technology in the twinkling of an eye. Focusing on three major areas of development - navigational satellites, communications, and weather observation and forecasting - Gavaghan tells the remarkable inside story of how obscure men and women, often laboring under strict secrecy, made satellite technology possible. "...a gripping read." -NEW SCIENTIST
Book Synopsis Vacuum Electronics by : Joseph A. Eichmeier
Download or read book Vacuum Electronics written by Joseph A. Eichmeier and published by Springer Science & Business Media. This book was released on 2008-03-04 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nineteen experts from the electronics industry, research institutes and universities have joined forces to prepare this book. It does nothing less than provide a complete overview of the electrophysical fundamentals, the present state of the art and applications, as well as the future prospects of microwave tubes and systems. The book does the same for optoelectronics vacuum devices, electron and ion beam devices, light and X-ray emitters, particle accelerators and vacuum interrupters.
Author :United States National Aeronautics and Publisher :Franklin Classics Trade Press ISBN 13 :9780344563126 Total Pages :358 pages Book Rating :4.5/5 (631 download)
Book Synopsis Beyond the Ionosphere by : United States National Aeronautics and
Download or read book Beyond the Ionosphere written by United States National Aeronautics and and published by Franklin Classics Trade Press. This book was released on 2018-10-31 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Elizabeth: Her Life, Our Times by : Alan Titchmarsh
Download or read book Elizabeth: Her Life, Our Times written by Alan Titchmarsh and published by Random House. This book was released on 2013-05-09 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: On 2 June 1953, 27-year-old Princess Elizabeth of York was crowned Queen, the eyes of the world upon her as she dedicated herself to her country. It is fascinating to look back over the sixty years since then and see how this remarkable woman, decade by decade, has brought the monarchy into the modern world, earning admiration and respect for her unerring sense of duty, her determination to innovate, her tremendous dignity, integrity and wisdom. Drawing from his own experience and time spent with the royal family, alongside additional meticulous research, Alan Titchmarsh observes the woman, the mother and the monarch. He explores key moments in her reign, both personal to her and in a wider historical context, and traces how our relationship with the royal family has developed and morphed, gone through ups and downs, but is arguably now stronger than ever in this very special anniversary year. Featuring wonderful memorabilia and rarely seen archive photography, Elizabeth II: Her Life, Our Times defines an era, pays tribute to our inexhaustable Queen and celebrates the example of responsibility, loyalty and patriotism she has set for generations past, present and future. She is an inspiration to us all.
Book Synopsis The Bell Telephone by : Alexander Graham Bell
Download or read book The Bell Telephone written by Alexander Graham Bell and published by . This book was released on 1908 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: No other source could ever equal Bell's personal and detailed description of the steps leading to his remarkable invention. This description is included in Bell's testimony before various courts in the years 1879, 1883 and 1887 when his exclusive patents rights were being questioned by the United States Government. In preparing his defense, Bell provided important insights into the process of his own experimentation leading to the first crude telephone. In his introduction, Charles H. Swan describes Bell's testimony as "... the most detailed and best arranged statement of his telephone work".
Download or read book The Idea Factory written by Jon Gertner and published by Penguin. This book was released on 2012-03-15 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive history of America’s greatest incubator of innovation and the birthplace of some of the 20th century’s most influential technologies “Filled with colorful characters and inspiring lessons . . . The Idea Factory explores one of the most critical issues of our time: What causes innovation?” —Walter Isaacson, The New York Times Book Review “Compelling . . . Gertner's book offers fascinating evidence for those seeking to understand how a society should best invest its research resources.” —The Wall Street Journal From its beginnings in the 1920s until its demise in the 1980s, Bell Labs-officially, the research and development wing of AT&T-was the biggest, and arguably the best, laboratory for new ideas in the world. From the transistor to the laser, from digital communications to cellular telephony, it's hard to find an aspect of modern life that hasn't been touched by Bell Labs. In The Idea Factory, Jon Gertner traces the origins of some of the twentieth century's most important inventions and delivers a riveting and heretofore untold chapter of American history. At its heart this is a story about the life and work of a small group of brilliant and eccentric men-Mervin Kelly, Bill Shockley, Claude Shannon, John Pierce, and Bill Baker-who spent their careers at Bell Labs. Today, when the drive to invent has become a mantra, Bell Labs offers us a way to enrich our understanding of the challenges and solutions to technological innovation. Here, after all, was where the foundational ideas on the management of innovation were born.
Book Synopsis Principles of Traveling Wave Tubes by : A. S. Gilmour
Download or read book Principles of Traveling Wave Tubes written by A. S. Gilmour and published by Artech House Radar Library (Ha. This book was released on 1994 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers detailed discussions of operating principles of helix and coupled-cavity traveling wave tubes, descriptions of RF interactions of electrons with electric fields, and the basic theories of electron bunching and traveling wave interactions.
