Excerpt from Wireless Telegraphy: Its History, Theory and Practice
Nearly a decade has now elapsed since the wireless telegraph made its spectacular appearance on the horizon of progressive achievement, and in these passing years it has come to be a factor of the first magnitude in the scheme of social and commercial economics which forms the foundation of our complex mode of living.
As an example of occult manifestations by the most subtle of nature's forces it stands vividly at the head of this class of phenomena, and the skilled labor it has called forth, that longer distances might be bridged, greater accuracy assured, swifter working effected, and, above all, the correlation of the invisible and elusive waves which would render selectivity a concrete fact, may in a small measure be determined by a perusal of these pages.
Since it frequently happens that didactic treatises fall into the hands of the untaught and the simplest of texts are sometimes found useful by the most highly trained specialist, it was proposed that all the various phases of the subject under consideration should receive due attention and, by connecting them in series, a complete and logical account would necessarily follow and one that would bring the state of the art down to the present time.
For this reason a brief historical retrospect takes precedence at the beginning of nearly every chapter, and then, in order to fulfil in sequence the conditions cited above, the theoretical deductions, experimental physics and finally the practical workings are given, and it is believed that by pursuing this course of treatment the book will find a hitherto unoccupied niche in the bibliography relating to wireless telegraphy.
In conclusion I wish to acknowledge my indebtedness to my friend, Dr. James E. Ives, for many consequential details herein enumerated, and which should, in virtue of his wide experience in the analysis and synthesis of electric wave action, make these portions invaluable to the student as well as to the advanced worker; and my thanks are also due to my brother, Dr. T. Byard Collins and to my wife, both of whom have greatly assisted in its preparation by reading the proofs and checking up the data.
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