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This book provides the reader with basic tools to solveproblems of electromagnetism in their natural functional frameworksthanks to modern mathematical methods: integral surface methods, andalso semigroups, variational methods, etc., well adapted to anumerical approach.

As examples of applications of these tools and concepts, we solveseveral fundamental problems of electromagnetism, stationary ortime-dependent: scattering of an incident wave by an obstacle, boundedor not, by gratings; wave propagation in a waveguide, with junctionsand cascades. We hope that mathematical notions will allow a betterunderstanding of modelization in electromagnetism and emphasize theessential features related to the geometry and nature of materials. ... Read more

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Magnetism is a powerful force that can attract one object to another. It is found in nature, but it also can be made by using electricity. The opposite is true, too Magnetism can be used to make electricity. Electromagnetism the close relationship between these forces makes possible many important things in modern life, from electric motors and power generators to lasers, cell phones, and computers. It is also one of the basic forces in nature. For more information, read Thomas Edison and the Developers of Electromagnetism, another book in the Mission Science series.

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This book describes the electromagnetic theory for the propagating modes of dielectric guides with the objective of understanding the applications of these guides to a telecommunication system. The dispersionless "solitonic" solution is introduced to inform the reader on this new optical pulse shape which may soon ensure transoceanic communications. The study of the minimization of the waveguide dispersion leads us, by means of several calculated frames, to the weakly-guiding condition. This essential condition for a large bandwidth fibre leads us to the introduction of the practical LP modes. In order to initiate the reader into integrated optics components, the electromagnetic solution for two coupled planar waveguides is treated in an appendix. Another appendix allows the reader to go through a quick initiation of the geometrical optics theory (essential for the study of graded-index fibre), being the iconal equation and the ray equation starting from Maxwell equation under the short wavelength approximation. ... Read more

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Providing a systematic classification and logical explanation of numerical methods from a unified viewpoint, this text provides mathematical background to the functional methods and their organic interrelations. A variety of methods are discussed including variational, weighted residue, moments, boundary integral, boundary element and finite element methods. The generalized multipole technique and other hybrid techniques are also considered. Differing from other texts in the field by combining mathematical methods with applications to electromagnetic engineering, the author includes examples of transmission lines, wave guides with continuities, cavities, antennae and antenna arrays and scatterers. In addition to introducing the basic concepts of functional methods, attention is paid to the construction of mathematical models, and comparisons of the various methods are made at regular intervals throughout the book. ... Read more

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This book provides an in-depth exposition of spin-stand microscopy of hard disk data which is a new technique recently developed and extensively tested by the authors of the book. Spin-stand microscopy is the first magnetic imaging technique where imaging is performed ex-situ on a rotating disk mounted on a spin-stand. This technique is one of the fastest scanning-based microscopy techniques. It is non-invasive and has nano-scale resolution. For these reasons, it provides unique capabilities for the visualization of magnetization patterns recorded on hard disks. This book is self-contained and it covers in sufficient details the basic facts of magnetic data storage technology, the principles and theory of spin-stand microscopy, its experimental implementations, as well as its applications in hard disk diagnostics, imaging of overwritten patterns, computer forensics of hard disk files, and data-dependent magnetic thermal relaxations of recorded magnetization patterns. This book will be a valuable reference for the magnetic data storage community, magnetic microscopy professionals as well as engineers and scientists involved in computer data forensics, commercial data recovery, and the design of archival data storage systems.

Key features:

- conceptual novelty of the technique and the demonstration of its wide scope of applications
- detailed exposition of the principles of spin-stand magnetic microscopy
- comprehensive discussions of novel image reconstruction techniques
- demonstration of high resolution spin-stand images of hard disk data
- presentation of sector-by-sector ex-situ forensics of hard disk files
- extensive studies of data-dependent thermal relaxations of magnetization patterns recorded on hard disks

Key features:

- conceptual novelty of the technique and the demonstration of its wide scope of applications
- detailed exposition of the principles of spin-stand magnetic microscopy
- comprehensive discussions of novel image reconstruction techniques
- demonstration of high resolution spin-stand images of hard disk data
- presentation of sector-by-sector ex-situ forensics of hard disk files
- extensive studies of data-dependent thermal relaxations of magnetization patterns recorded on hard disks ... Read more

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
This series provides in-depth coverage of the Physical Science curriculum in an easy to understand format, proving to be an invaluable companion and support for school textbooks.It stresses the key features of Science teaching at this level, including scientific enquiry, use of ideas and evidence, and planning, evaluation and investigative skills. It is packed full of photographs and clear artwork to explain difficult concepts, with sample experiments and data to illustrate best practice. Case studies of key experiments and discoveries in the History of Science highlight the importance of inquiry and investigation. ... Read more