File:Rx marconi.jpg
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Size of this preview: 461 × 599 pixels. Other resolutions: 185 × 240 pixels | 369 × 480 pixels | 963 × 1,251 pixels.
Original file (963 × 1,251 pixels, file size: 271 KB, MIME type: image/jpeg)
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Summary
 | This file is an original and may be obsolete for general use, but is kept for historical or archival use. As such, it should not be modified or deleted except to correct upload or technical errors. Any modified versions or replacements of this image should be uploaded with a different file name. |
| Description |
Français : Récepteur cohéreur à tube de limaille (de Guglielmo Marconi). Ce récepteur d'ondes hertziennes a permis de réaliser les premières liaisons radios à grande distance en radiotélégraphie par Guglielmo Marconi en 1901.
English: Inductively coupled coherer radio receiver circuit from Guglielmo Marconi's April 26, 1900 patent. |
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| Source |
Français : Brevet 7777 Guglielmo Marconi
English: Fig. 2, UK patent no. 7777, Guglielmo Marconi Improvements in Apparatus for Wireless Telegraphy, filed April 26, 1900; granted April 13, 1901. Also appears in US patent no. 763772, Guglielmo Marconi Apparatus for Wireless Telegraphy, filed November 10, 1900; granted June 28, 1904. |
| Author | Guglielmo Marconi |
Licensing
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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.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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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, 1930, and if not then due to lack of notice or renewal. See this page for further explanation.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:50, 2 September 2010 | | 963 × 1,251 (271 KB) | wikimediacommons>F1jmm | {{original}} {{Information |Description={fr| Récepteur cohéreur à tube de limaille (de Guglielmo Marconi) 1902. Ce récepteur d'ondes hertziennes a permis de réaliser les premières liaisons radios à grande distance en radiotélégraphie par Gugliel |
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