A Manual of Telephony (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from A Manual of Telephony

There is perhaps nothing more astonishing in the annals of science than the way in which the use of the telephone has developed. In July, 1877, one of the authors of this book brought the first pair of practical telephones to Europe. It is not too much to say that there are now more than a million in daily use.

The idea of transmitting sound to a distance may be traced back to remote antiquity; it found its first prae tical expression in the construction of the speaking tube, and in more modern times in that of the string telephone.

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