Download or read book On the Diffraction of Electromagnetic Waves by Annular Elliptical and Rectangular Apertures written by CHAANG. HUANG and published by . This book was released on 1953 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is presented of the derivation of the Kirchhoff-type transmission coefficient as given by Levine and Schwinger (Communications on Pure and Applied Math. III, 4: Dec. 1950) for an aperture in an infinite, pefectly conducting plane of infinitesimal thickness with an incident plane electromagnetic wave. The tangential to be equal to that of the known incident magnetic field. With this relationship, the approximate transmission coefficients of annular, elliptical, and rectangular appertures are evaluated for normal incidence. Numerical results are plotted for appropriate dimensions of each aperture.

Download or read book Bibliography on the Theory of Diffraction and Propagation of Radio Waves written by Nelson A. Logan and published by . This book was released on 1957 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Classical and Modern Diffraction Theory written by Kamill Klem-Musatov and published by SEG Books. This book was released on 2016-06-30 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing geophysicists with an in-depth understanding of the theoretical and applied background for the seismic diffraction method, “Classical and Modern Diffraction Theory” covers the history and foundations of the classical theory and the key elements of the modern diffraction theory. Chapters include an overview and a historical review of classical theory, a summary of the experimental results illustrating this theory, and key principles of the modern theory of diffraction; the early cornerstones of classical diffraction theory, starting from its inception in the 17th century and an extensive introduction to reprinted works of Grimaldi, Huygens, and Young; details of the classical theory of diffractions as developed in the 19th century and reprinted works of Fresnel, Green, Helmholtz, Kirchhoff, and Rayleigh; and the cornerstones of the modern theory including Keller’s geometrical theory of diffraction, boundary-layer theory, and super-resolution. Appendices on the Cornu spiral and Babinet’s principle are also included.

Download or read book AFOSR written by United States. Air Force. Office of Scientific Research and published by . This book was released on 1950 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1979 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Air Force Scientific Research Bibliography 1950 56 written by Library of Congress. Science and Technology Division and published by . This book was released on 1961 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Notices of Changes in Classification Distribution and Availability written by and published by . This book was released on 1980 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diffraction of Electromagnetic Waves by a Circular Aperture in an Infinitely Conducting Plane Screen written by Jack Bazer and published by Palala Press. This book was released on 2018-03-03 with total page 54 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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Diffraction of Electromagnetic Waves on Two Bodies written by Evgeniĭ Alekseevich Ivanov and published by . This book was released on 1959 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diffraction of Electromagnetic Waves by a Circular Aperture in an Infinitely Conducting Plane Screen Classic Reprint written by Jack Bazer and published by Forgotten Books. This book was released on 2016-09-15 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Diffraction of Electromagnetic Waves by a Circular Aperture in an Infinitely Conducting Plane Screen In this paper, we present an approach to the vector aperture problem which is an extension of the work of J. Bazer and H. Hochstadt [7] on the scalar aperture problem. Our method is most closely related to two recent attacks on the problem due to K. A. Lur'e [8] and w. E. Williams [9bj2'3. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Progress Report written by Harvard University. Division of Engineering and Applied Physics and published by . This book was released on 1955 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diffraction of Electromagnetic Waves by a Circular Aperture in an Infinitely Conducting Plane Screen written by and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attention is focused chiefly on the low frequency end of the spectrum where the product ka of the wave number k and the aperture radius a is small. Transverse electric and transverse magnetic modal excitation appropriate to the cylindrical geometry of the problem is assumed. New integral representa tions of the solution corresponding to incident fields of this kind are presented. These representations, which involve a pair of unknown functions, are designed so as to automatically satisfy Maxwell's equations, the boundary conditions, the radiation condition and all but one of the edge conditions. The unknown functions are shown to satisfy a pair of integrodifferential equations which follow directly from the representations by means of an elementary calculation. Convergent power series solutions of these integro-differential equations are readily obtained for small enough ka, when it is assumed merely that the excitation is sufficiently regular in the aperture. These results are employed to derive the first terms in the power series expansions of the far fields, the edge fields, the aperture fields and of the transmission coefficients. When the incident transverse electric and magnetic modes are specialized to those which occur in plane wave excitation these expressions are found to reduce to the well-known plane wave formulas obtained by other means. (Author).

Download or read book Title Announcement Bulletin written by and published by . This book was released on 1953 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diffraction of Microwaves by Slits and Elliptical Apertures written by Air Force Cambridge Research Center (U.S.) and published by . This book was released on 1953 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The near-zone field distribution of an infinite slit and of an elliptical hole was investigated experimentally when these apertures were irradiated at normal incidence by a plane monochromatic electromagnetic wave. The field possesses a structure which is a function of the shape and the dimensions of the aperture. The approximate theories of Bekefi and Neugebauer predict the general structure of the field, but fail to describe it exacty. A modification of the theory which effectively reduces the width of the slit by one-quarter wavelength, results in a much better agreement with experiment." --

Download or read book Diffraction of an Electromagnetic Wave by the Aperture microform written by Wu, Chuang-Jy and published by National Library of Canada. This book was released on 1966 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Electromagnetic wave diffraction theories for large circular, rectangular, triangular and hexagonal apertures in a plane screen have been investigated theoretically and experimentally. (Both the intensity and the phase of the electric field at 9.3 KMC are measured). The near field distribution for the circular aperture has been calculated rigorously, and the results used to verify the experimental arrangement. [...]" --

Download or read book Subject Index to Unclassified ASTIA Documents written by Defense Documentation Center (U.S.) and published by . This book was released on 1960 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Waves in Focal Regions written by J.J Stamnes and published by Routledge. This book was released on 2017-11-13 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using numerous mathematical and numerical techniques of diffraction theory, Waves in Focal Regions: Propagation, Diffraction and Focusing of Light, Sound and Water Waves provides a full and richly illustrated description of waves in focal regions. Unlike most books, the author treats electromagnetic, acoustic, and water waves in one comprehensive volume. After an introductory section, the book describes approximate diffraction theories and efficient numerical methods to study the focusing of various kinds of waves. It then covers the physical interpretation of the theories, their accuracy, and the computational savings obtained, emphasizing uniform asymptotic results that remain valid in the vicinity of shadow boundaries and caustics. The next part deals with the focusing of scalar waves, including thorough theoretical analyses and detailed contour maps of diffraction patterns in focal regions for a variety of different system parameters, such as f-number, Frensel number, aperture shape, amplitude distribution, and wavefront aberration. The author proceeds to explore the diffraction and focusing of electromagnetic waves. First solutions are derived for fields radiated by sources, reflected and refracted at plane interfaces, or diffracted by apertures in plane screens, and then these solutions are applied to study the focusing in homogeneous media and through a plane dielectric interface. In both cases, the author includes many computed results of the electromagnetic field distribution near focus. Presenting both theoretical and experimental results, the following part examines the focusing of sound and water waves by means of zone-plate lenses. The book concludes with a detailed study of the diffraction and focusing of water waves and a comparison of the results of both linear and nonlinear theories with those of experiments.