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Excerpt from Diffraction Theory Three Papers: Translated From the Russian On the basis of a critical survey of earlier papers it is shown that the results obtained in these papers are insufficiently justified. A rigorous solution of the problem is given. It is also shown that in the limiting case of very high frequencies the solution takes on a form which corresponds to the approximation yielded by geometrical Optics. 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.