Radiotelegraphy: U. S. Signal Corps (Classic Reprint) - Softcover

States; Army; Signal Corps, United

9781330600627: Radiotelegraphy: U. S. Signal Corps (Classic Reprint)

Softcover

ISBN 10: 1330600622 ISBN 13: 9781330600627

Verlag: Forgotten Books, 2018

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Excerpt from Radiotelegraphy

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Excerpt from Radiotelegraphy: U. S. Signal Corps

Electrical phenomena may be grouped in two general classes, one of static electricity, when the electrical charges are at rest, and the other of dynamic or current electricity, when the charges are in motion along a conductor.

When an insulator, such as sealing wax, is rubbed with far, or a glass tube with silk, it acquires the property of attracting light bodies near it, and is said to be charged. This action shows that forces exist in the adjacent space, and there is said to be an electrostatic, or, more briefly, a static field of force about the charged body. When two charged bodies are brought near together they may be either attracted or repelled, depending on the nature of the two chaises. If the rubbed glass is brought near particles touched and charged by the rubbed sealing wax they will he attracted to it, and similarly if the rubbed sealing wax is brought near particles charged by the rubbed glass they will be attracted; but two bodies, both of which have been charged by either the glass or the wax, will repel each other. Hence like charges repel each other and unlike charges attract. The names positive (glass) and negative (sealing wax) have been given, respectively, to these charges. By means of a delicately suspended insulated body the static forces can be mapped out along directions in general perpendicular to the charged surfaces.

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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