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Voice sounds were transmitted for the first time on June 3, 1875 over this instrument...

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EVB2937764
Image title
Voice sounds were transmitted for the first time on June 3, 1875 over this instrument invented by Alexander Graham Bell and Thomas Watson. The diaphragm was made of tightly stretched animal membrane, and powered with batteries it transmitted sounds over a telegraph wire. It is called the Gallows Phone because of its resemblance to a gallows
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Voice sounds were transmitted for the first time on June 3, 1875 over this instrument invented by Alexander Graham Bell and Thomas Watson. The diaphragm was made of tightly stretched animal membrane, and powered with batteries it transmitted sounds over a telegraph wire. It is called the Gallows Phone because of its resemblance to a gallows

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Everett Collection / Bridgeman Images
Image keywords
USA / North America / America (continent) / battery powered / firsts / science / technology / historical / bell / communications / 19th century / sound / electricity / telephone / inventions / 1870s / history / alexander graham / watson / thomas / Photograph / Photography / Mzphoto
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Largest available format 3000 × 2160 px 1 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB]
Large 3000 × 2160 px 254 × 183 mm 586 KB
Medium 1024 × 738 px 87 × 62 mm 292 KB

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