Wireless Telegraphy and Telephony
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Wireless Telegraphy
and
Telephony
Popularity Explained
By
Walter W. Massie
and
Charles R. Underhill
With special article by Nikola Tesla
New York
D. Nostrand Company
23 Murray and 27 Warren Streets
1908
Copyright, 1908
by
D. Van Nostrand Company
Robert Drummond Company, Printers, New York
Preface
Wireless Telegraph is mentioned in almost every publication of to-day, and enters into conversation between all; yet how few really know what it means.
There have been several books written on the subject for the expert or technical man, but so far nothing has been written that explains it in a way that every one may understand.
In this book the authors use simple expressions, containing no technical words, so that all may obtain a clear idea of the inception and development of this much-talked-of art.
We here describe the substance through which signals are sent, the theory of the propagation of waves, method of generating and receiving the waves, the apparatus used, and, finally, the uses, limitations, and possibilities of wireless telegraphy both commercially and financially.
Providence, R. I.
New York.
Walter W. Massie.
Charles R. Underhill
- July 15, 1908.
Contents
Chapter I | |||
page | |||
1. | Nature’s Wonderful Medium | 1 | |
2. | Vibrations in the Ether | 3 | |
Chapter II | |||
3. | Principle | 6 | |
4. | Synchronous Wave Motion and Tuning | 8 | |
5. | Theory | 11 | |
Chapter III | |||
6. | General Outline | 14 | |
7. | The Induction Coil | 14 | |
8. | Leyden-jar Battery | 15 | |
9. | The Spark-gap | 18 | |
10. | Production of Oscillatory Discharge | 19 | |
11. | The Inductance | 20 | |
12. | The Antenna | 22 | |
13. | Tuning the Transmitting Apparatus | 22 | |
14. | The Receiving Apparatus | 26 | |
15. | Detectors | 27 | |
Chapter IV | |||
16. | Switching Device | 34 | |
17. | Sending the Message | 34 | |
Chapter V | |||
18. | Early Attempts | 39 | |
19. | Development of Wireless | 40 | |
Chapter VI | |||
20. | Public Service | 44 | |
21. | Value to Shipowners | 45 | |
22. | Telegraphing over Land | 46 | |
Chapter VII | |||
23. | Commercial Conditions | 51 | |
24. | The Present State of the Art | 52 | |
25. | Interference and Government Regulation | 55 | |
26. | The Outlook and Prophecy | 61 | |
63 | |||
67 |
This work is in the public domain in the United States because it was published in 1908, before the cutoff of January 1, 1929.
This work may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.
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