Alexander Graham Bell (1847-1922,front),Scottish inventor,and Thomas Watson (1854-1934,directly behind Bell),US inventor and telephone pioneer. Watson helped Bell to develop a practical and workable telephone. On the 10th March 1876 Watson heard the first words transmitted electrically by wire,when Bell spoke into his experimental telephone in a different room of the same building. Photographed in 1916 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Library of Congress |
Bildgröße: | 1948 px × 2693 px |
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