Harper's Wireless Book; How to Use Wireless Electricity in Telegraphing, Telephoning and the Transmission of Power
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Home > Art, Film & Photography > Harper's Wireless Book; How to Use Wireless Electricity in Telegraphing, Telephoning and the Transmission of Power
Harper's Wireless Book; How to Use Wireless Electricity in Telegraphing, Telephoning and the Transmission of Power

Harper's Wireless Book; How to Use Wireless Electricity in Telegraphing, Telephoning and the Transmission of Power


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About the Book

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...receiving-outfit did service as a wireless telephone. It was very weird to sit in the room and hear the voices which we knew were really such a distance away and connected in no way with us. Part III WIRELESS TELEPHONY Chapter XI SOUNDS AND SOUND-WAVES FROM the time that wireless telegraphy first proved successful many inventors and scientists have endeavored to perfect methods of transmitting sound by electromagnetic waves through the ether. A great many difficulties had to be overcome which were not present in wireless telegraphy, and many problems were involved which rendered wireless telephony far more complicated and difficult than wireless telegraphy. At the present time wireless telephony has been perfected to such a degree that the human voice, music, and similar sounds may be successfully transmitted for a distance of one hundred miles or more. In this field the amateur has ample opportunity for experiment, with great rewards for new and practical appliances and inventions. That boys may succeed in developing unlooked-for results in wireless telephony is proved by the fact that the boys of the Bancroft Foote Club, of New Haven, Connecticut, established a world's record for long-distance sound transmission by wireless during the past year. The Theory and Principles of Sound Before explaining the principles of wireless telephony it is necessary to understand just what sound is, how it is heard, and how it is caused. Every body or object which causes sound is in a state of vibration while producing the sound, and it is these vibrations striking the delicate organ known as the ear that produce the sensation in our brains which we call "sound." As a matter of fact, sound is nothing but a form of vibrating invisible waves in the atmosphere, and...


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Product Details
  • ISBN-13: 9781231069103
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 42
  • Spine Width: 2 mm
  • Width: 189 mm
  • ISBN-10: 1231069104
  • Publisher Date: 01 May 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 95 gr


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Harper's Wireless Book; How to Use Wireless Electricity in Telegraphing, Telephoning and the Transmission of Power
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