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Book Monthly Catalogue  United States Public Documents

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1970 with total page 1730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Diffraction of Electromagnetic Waves on Two Bodies

Download or read book Diffraction of Electromagnetic Waves on Two Bodies written by Ye. A. Ivanov and published by . This book was released on 1970 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Problems of High Frequency Diffraction by Elongated Bodies

Download or read book Problems of High Frequency Diffraction by Elongated Bodies written by Ivan Andronov and published by Springer Nature. This book was released on 2023-04-14 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Classical asymptotic expansions, while producing a good approximation for the diffracted fields in general, appear hardly applicable in the case of extremely elongated bodies. Thus, there are problems that are on the one hand too difficult for numerical solvers due to large system size, and on the other hand make the description with classical asymptotic methods hard. The book explains why this happens and suggests the way out. By defining the characteristics of a strongly elongated body it introduces a special class of asymptotic approximations, which are in some sense uniform with respect to the rate of body elongation. Chapter 1 briefly describes the results of V. A. Fock and further developments of his approach towards the problems of diffraction by elongated obstacles. It formulates the cases of moderately and strongly elongated bodies. The rest of the book describes the approach of special parabolic equations, which lead to new asymptotic approximations for the diffracted fields. Chapters 2, 3 and 4 discuss diffraction by bodies of elliptical shape: The elliptic cylinder with a strongly elongated cross section and prolate spheroid with a high aspect ratio. Chapter 5 generalizes the approach to some other shapes such as narrow cones and narrow hyperboloids. Mathematical formulas for the Whittaker functions widely used in the book are collected in the Appendix. The concise derivations are supplied with numerous test examples that compare asymptotic approximations with numerically computed fields and clarify the specifics of high frequency diffraction by strongly elongated bodies. The reference solutions presented in the book enable one to validate the newly developed numerical solvers.

Book Electromagnetic Scattering by Finned Objects

Download or read book Electromagnetic Scattering by Finned Objects written by Gary Michael Ruckgaber and published by . This book was released on 1968 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solutions are obtained for the scattering of an incident plane electro-magnetic wave by each of the following perfectly conducting objects: (a) an infinite circular cylinder having an attached sector, which, in the limiting case of zero sector angle, becomes a circular cylinder having a fin, (b) an infinite circular cylinder having two coplanar fins, which, in the limiting case of zero cylinder radius, becomes a strip, (c) a sphere having a fin, which, in the limiting case of zero sphere radius, becomes a circular disc. In each problem, the scatterer is described by sections of constant-coordinate surfaces and the space surrounding the scatterer is partitioned into several regions. The electromagnetic field in each region is expanded in a complete set of Hansen vector wave functions with unknown expansion coefficients. These sets of expansion coefficients are then determined by satisfying the boundary conditions. A review of scattering by the circular cylinder and sphere is also presented. Numerical results are obtained for scattering by the one-finned cylinder, the finned sphere, and circular disc. For the one-finned cylinder and the finned sphere, the results show the effect of the fin on the back scattering by the cylinder and the sphere, respectively. In the case of the circular disc, the results for the back-scattering radar cross section agree with the values given by the solution of W. Andrejewski and that of physical optics. (Author).

Book Journal of Research of the National Bureau of Standards

Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1960 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Journal of Research

Download or read book Journal of Research written by United States. National Bureau of Standards and published by . This book was released on 1960 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fundamentals of the Physical Theory of Diffraction

Download or read book Fundamentals of the Physical Theory of Diffraction written by Pyotr Ya. Ufimtsev and published by John Wiley & Sons. This book was released on 2007-02-09 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first complete and comprehensive description of the modern Physical Theory of Diffraction (PTD) based on the concept of elementary edge waves (EEWs). The theory is demonstrated with the example of the diffraction of acoustic and electromagnetic waves at perfectly reflecting objects. The derived analytic expressions clearly explain the physical structure of the scattered field and describe in detail all of the reflected and diffracted rays and beams, as well as the fields in the vicinity of caustics and foci. Shadow radiation, a new fundamental component of the field, is introduced and proven to contain half of the total scattered power.

Book Library of Congress Catalog

Download or read book Library of Congress Catalog written by Library of Congress and published by . This book was released on 1970 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book U S  Government Research Reports

Download or read book U S Government Research Reports written by and published by . This book was released on 1963 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Computer Modeling in Engineering   Sciences

Download or read book Computer Modeling in Engineering Sciences written by and published by . This book was released on 2004 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Journal of Communications Technology   Electronics

Download or read book Journal of Communications Technology Electronics written by and published by . This book was released on 1998 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fundamentals in Chemical Physics

Download or read book Fundamentals in Chemical Physics written by F. Battaglia and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking an individual approach, this book focuses on the concepts underlying chemical physics. It presents the essence of a connected theory rather than mere explanations of apparently unrelated facts, helping readers to understand chemical phenomena in terms of the most fundamental laws of physics.

Book The United States Department of Commerce Publications  Catalog and Index Supplement

Download or read book The United States Department of Commerce Publications Catalog and Index Supplement written by United States. Department of Commerce and published by . This book was released on 1967 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book United States Department of Commerce Publications

Download or read book United States Department of Commerce Publications written by United States. Dept. of Commerce. Office of Publications and published by . This book was released on 1966 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: