Excerpt from The Theory of the Submarine Telegraph and Telephone Cable, Vol. 7
This book is the outcome of a desire on the part of its author to understand the phenomena which underlie the working of the submarine telegraph cable. On entering upon the study of the subject he found very little information to be available, apart from the profound theoretical researches of Oliver Heaviside. Although excellent treatises are devoted to the manufacture, laying and maintenance of cables, no reasoned explanation existed of the principles of telegraphic transmission, although to such transmission the other processes are all subservient.
The results of his investigations appeared in The Electrician in a serial article in 1912, and subsequent Papers have continued them. They are brought together here, with much additional matter, consisting chiefly of the chapters on the Theory of the Submarine Telephone Cable, and it is hoped that they will prove useful as an introduction to the study of this important subject.
The principles which have guided the setting forth of these results are as follow: -
(a) To illustrate every formula graphically in its most important cases, so as to bring out the full significance of its various parts;
(b) To apply all formul?, as far as possible, to the same typical cable or cables, so that they may be directly comparable one with another; and
(c) To express all results in the ordinary practical units to render them intelligible at once to anyone who may not have followed the processes by which they were derived.
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