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Bell's Photophone,1880

Illustration of a photophone transmitter, showing the path of reflected sunlight, before and after being modulated. The photophone is a telecommunications device that allows transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C Bell believed the photophone was his most important invention. Of the 18 patents granted in Bell's name alone, and the 12 he shared with his collaborators, four were for the photophone, which Bell referred to as his "greatest achievement," and "greater than the telephone." The photophone was a precursor to the fiber-optic communication systems that achieved worldwide popular usage starting in the 1980s.
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Title:
Bell's Photophone,1880
Caption:
Illustration of a photophone transmitter, showing the path of reflected sunlight, before and after being modulated. The photophone is a telecommunications device that allows transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C Bell believed the photophone was his most important invention. Of the 18 patents granted in Bell's name alone, and the 12 he shared with his collaborators, four were for the photophone, which Bell referred to as his "greatest achievement," and "greater than the telephone." The photophone was a precursor to the fiber-optic communication systems that achieved worldwide popular usage starting in the 1980s.
Credit:
Album / Science Source
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Image size:
2700 x 1994 px | 15.4 MB
Print size:
22.9 x 16.9 cm | 9.0 x 6.6 in (300 dpi)
Keywords: