File:Ruhmer photographophone (1901).jpg
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Summary
| Description |
English: The photographophone recorded audio as visible lines on film stock |
| Date | |
| Source | Figure 3 from "The 'Photographophone'", Scientific American, July 20, 1901, page 36. |
| Author | Scientific American, New York |
Licensing
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:53, 30 June 2023 | | 819 × 636 (97 KB) | Thomas H. White | Uploaded a work by Scientific American, New York from Figure 3 from "The 'Photographophone'", Scientific American, July 20, 1901, page 36. with UploadWizard |
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