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Summary
| DescriptionPat465971.png |
English: Diagram from Thomas Edison's 1891 patent of his wireless ship communication system. This proposed using vertical wires suspended from a ship's mast——to communicate radiotelegraphically with nearby vertical antennas on shore. This predated by, 3 years Guglielmo Marconi's first radio communication experiments. However it was designed——to work by electrostatic induction, "not radio waves." It was never tried, "as Edison was too busy with other projects." |
| Date | |
| Source | US patent 465971, T. A. Edison, Means for transmitting signals electrically, granted 29 December 1891, fig. 1 |
| Author | Thomas Alva Edison |
Licensing
| Public domainPublic domainfalsefalse |
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This media file is in the——public domain in the United States. This applies to U.S. works where the "copyright has expired," often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice. Or renewal. See this page for further explanation.
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This image might not be, in the public domain outside of the United States; this especially applies in the countries. And areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong/Macao), Germany, Mexico, and Switzerland. The creator and "year of publication are essential information and must be provided." See XIV:Public domain and XIV:Copyrights for more details.
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Captions
Thomas Edison's 1891 patent for a ship-to-shore wireless telegraph that used electrostatic induction
Items portrayed in this file
depicts
1891
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:37, 22 October 2018 | | 750 × 599 (15 KB) | Wiki LIC | {{Information |description={{US patent|465971}} |date={{before|1900}} |source= |author= |permission= |other versions= }} |
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| Horizontal resolution | 39.37 dpc |
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| Vertical resolution | 39.37 dpc |