Masters of space: Morse and the telegraph; Thompson and the cable; Bell and the telephone; Marconi and the wireless telegraph; Carty and the wireless telephone; (1917)

Towers, Walter Kellogg, 1888- · New York, London, Harper & brothers · leaf 174

An illustration from Masters of space: Morse and the telegraph; Thompson and the cable; Bell and the telephone; Marconi and the wireless telegraph; Carty and the wireless telephone;, 1917, leaf 174 — BIRTH OF THE TELEPHONE in the human ear. This was stretched tightto form a sort of drum, and an armature ofmagnetized iron was fastened to its middle.Thus the bit of iron was free to vibrate, andopposite it was an electro-magnet throughwhich flowed the current that passed over theline. This acted…

Morse, Samuel Finley Breese, 1791-1872 · Kelvin, William Thomson, Baron, 1824-1907 · Bell, Alexander Graham, 1847-1922 · Marconi, Guglielmo, marchese, 1874-1937 · Carty, John J. (John Joseph), 1861-1932 · Telegraph · Telegraph, Wireless · Telephone · Radio

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More pictures from Masters of space: Morse and the telegraph; Thompson and the cable; Bell and the telephone; Marconi and the wireless telegraph; Carty and the wireless telephone;

Masters of space: Morse and the telegraph; Thompson and the cable; Bell and the telephone; Marconi and the wireless telegraph; Carty and the wireless telephone; (1917)

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