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USA WISSENSCHAFT ALEXANDER GRAHAM BELL
First long-distance telephone call. Alexander Graham Bell (1847-1922, centre) performing the first long-distance telephone call in 1876. The conversation took place between Boston, Massachusetts, USA, and the town of Salem, some 22 kilometres away. Bell was a speech therapist who worked with the deaf. His experiments on the transmission of sound led to his designs for the multiple telegraph and the telephone. Bell won a lengthy legal battle with Elisha Gray, who filed a similar telephone patent on the same day. After this he became a rich man, and founded the company that became AT+T. Illustration taken from La Telegraphie Historique (1888), by Alexis Belloc. (KEYSTONE/SCIENCE PHOTO LIBRARY/Sheila Terry) === ===
Instruktionen
COPYRIGHTPFLICHTIG
Lizenz
Rights Managed
Erstellungsdatum
Ort
USA VEREINIGTE STAATEN AMERIKA
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
SHEILA TERRY
Grösse
4000 x 3004 px
Dateityp
JPEG