Excerpt from Television: A Practical Treatise on the Principles Upon Which the Development of Television Is Based TI The book is devoted principally to a discussion of mechanical systems of scanning inasmuch as those devices which are on the market employ mechanical movement to dissect the picture area. However, one chapter is given over to a presentation of the principles involved in electrical scanning and the development of the process. Scanning devices, the necessity for breaking up the picture, how it is first broken into its in tegral parts, converted into electrical energy, received, and recon structed to reproduce what takes place in the television studio are dis cussed in sequence. There is also a description of one of the leading synchronous motors designed for use in operating a scanning system. A chapter which explains the principles involved and the process used in transmitting pictures by wire gives a description of what occurs in television, except that it is in effective slow motion. 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.