Wireless Telegraphy Fort 1913

TELEGRAPHY FORTESCUE GIFT OF E.P.Lewis Physics der>t The Cambridge Manuals of Science and Literature CAMBRIDGE UNIVERSITY PRESS FETTEK LANE, B.C. C. F. CLAY, MANAGER: 100, PRINCES STREET H. K. LEWIS, 186, GOWER STREET, W.C. WILLIAM WESLEY & SON, 28, ESSEX STREET, STRAND Berlin: A. ASHER AND CO. fUtp>is: F. A. BROCKHAUS $eto gorfc: G. P. PUTNAM'S SONS iSombau anti Calcutta: MACMILLAN AND CO., LTD. All ri reserved WIRELESS TELEGRAPHY BY C. L. FORTESCUE, M.A. Professor of Physics, Royal Naval College, Greenwich Cambridge: at the University Press New York: G. P. P'ltnain's "Sons F7 PHYSICS DEPT. PHYSICS DEPT Cambridge: FEINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS With the exception of the coat of arms at the foot, the design on the title page is a reproduction of one used by the earliest known Cambridge printer, John Siberch, 1521 PREFACE TN this book the author has had in his mind's eye J- the reader who, possessing a general scientific knowledge, is anxious to know something, not only of the accomplishments of wireless, but also of the means by which they are attained. The subject is necessarily a highly technical one, and the first four chapters are devoted solely to explanations of the electrical phenomena involved. Which explanations it may be added are really little more than statements of facts illustrated where possible by mechanical analogy. The…