File:Photographing Sound in 1884. A rare photograph taken at Volta Laboratory by J. Harris Rogers, a friend of Bell and Tainter (Smithsonian photo 44312-E) i009.jpg
![File:Photographing Sound in 1884. A rare photograph taken at Volta Laboratory by J. Harris Rogers, a friend of Bell and Tainter (Smithsonian photo 44312-E) i009.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Photographing_Sound_in_1884._A_rare_photograph_taken_at_Volta_Laboratory_by_J._Harris_Rogers%2C_a_friend_of_Bell_and_Tainter_%28Smithsonian_photo_44312-E%29_i009.jpg/800px-Photographing_Sound_in_1884._A_rare_photograph_taken_at_Volta_Laboratory_by_J._Harris_Rogers%2C_a_friend_of_Bell_and_Tainter_%28Smithsonian_photo_44312-E%29_i009.jpg?20100318004743)
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editDescriptionPhotographing Sound in 1884. A rare photograph taken at Volta Laboratory by J. Harris Rogers, a friend of Bell and Tainter (Smithsonian photo 44312-E) i009.jpg |
English: A description of the procedure used is found on page 67, of Tainter's unpublished autobiography. There, Tainter quotes Chichester Bell as follows:
"A jet of bichromate of potash solution, vibrated by the voice, was directed against a glass plate immediately in front of a slit, on which light was concentrated by means of a lens. The jet was so arranged that the light on its way to the slit had to pass through the nappe and as the thickness of this was constantly changing, the illumination of the slit was also varied. By means of a lens ... an image of this slit was thrown upon a rotating gelatine-bromide plate, on which accordingly a record of the voice vibrations was obtained." |
Date | |
Source | Library Of Congress (US) |
Author | J. Harris Rogers |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 00:47, 18 March 2010 | ![]() | 801 × 507 (88 KB) | Harryzilber (talk | contribs) | {{Information |Description={{en|1=A description of the procedure used is found on page 67, of Tainter's unpublished autobiography. There, Tainter quotes Chichester Bell as follows: "A jet of bichromate of potash solution, vibrated by the voice, was direc |
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File change date and time | 01:42, 23 September 2009 |
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