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Excerpt from Radiation Patterns and Radiation Fields There are two aspects of this problem of radiation patterns. The first is to prove (5) and express fig) in terms of U(x); the second is to find a func tion U(x) having a given radiation pattern This last problem involves de termining the class cuffunctions f(e), defined on the unit sphere, which.may occur as radiation patterns. This class is not the class of continuous functions nor is it the class of analytic functions; it can best be characterized by considering an associated class of harmonic functions H(x). The order of magnitude of hkx) gives a criterion as to whether or not can be a radiation pattern. 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.

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