Graham Bell, a displaced Scotsman and professor of vocal physiology at Boston University, was not trying to invent the telephone. He was trying to teach deaf people to hear. His experiments involving the transmission of sound by electricity failed to accomplish his lifelong goal-a hearing prosthesis
Exhibit of the American district telegraph company
- Publisher
- Elsevier Science
- Year
- 1885
- Tongue
- English
- Weight
- 57 KB
- Volume
- 119
- Category
- Article
- ISSN
- 0016-0032
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EXHIBIT OF THE "WESTERN ELECTRIC CO~fPANY. The Hotel Fire Alarm and Room Call, exhibited by this company, is designed for the following purposes: When a call is received in the office by means of the annunciator, the clerk, by pressing one of the push buttons, can signif~ to the guest that the call
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