File:Rx marconi.jpg
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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. العربيَّة ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ français ∙ magyar ∙ italiano ∙ 日本語 ∙ Lëtzebuergesch ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ português ∙ русский ∙ slovenščina ∙ svenska ∙ 简体中文 ∙ 繁體中文 ∙ 正體中文(臺灣) ∙ +/− |
DescriptionRx marconi.jpg |
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. |
Date | |
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
Public domainPublic domainfalsefalse |
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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
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 or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
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Captions
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depicts
26 April 1900Gregorian
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:50, 2 September 2010 | ![]() | 963 × 1,251 (271 KB) | commons>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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Orientation | Normal |
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Horizontal resolution | 200 dpi |
Vertical resolution | 200 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 18:32, 2 September 2010 |
Y and C positioning | Co-sited |
Exif version | 2.2 |
Color space | sRGB |