File:Radiotéléphonie arc.JPG
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Radiotéléphonie_arc.JPG (745 × 584 pixels, file size: 64 KB, MIME type: image/jpeg)
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Summary[edit]
| Description |
Français : Émetteur radiotéléphonique à arc vers 1904 . |
| Date | |
| Source | Scanned and modified by F1jmm |
| Author | Frederick Collins |
| Permission (Reusing this file) |
Permission= |
| Other versions | 2 |
Licensing[edit]
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This image (or other media file) is in the public domain because its copyright has expired and its author is anonymous.
This applies to the European Union and those countries with a copyright term of 70 years after the work was made available to the public and the author never disclosed their identity. Important: Always mention where the image comes from, as far as possible, and make sure the author never claimed authorship. |
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Note: In Germany and possibly other countries, certain anonymous works published before July 1, 1995 are copyrighted until 70 years after the death of the author. See Übergangsrecht. Please use this template only if the author never claimed authorship or their authorship never became public in any other way. If the work is anonymous or pseudonymous (e.g., published only under a corporate or organization's name), use this template for images published more than 70 years ago.
For a work made available to the public in the United Kingdom, please use Template:PD-UK-unknown instead.
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This circuit image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with
{{vector version available|new image name}}.
It is recommended to name the SVG file “Radiotéléphonie arc.svg”—then the template Vector version available (or Vva) does not need the new image name parameter. |
 | This circuit image was uploaded in the JPEG format even though it consists of non-photographic data. This information could be stored more efficiently or accurately in the PNG or SVG format. If possible, please upload a PNG or SVG version of this image without compression artifacts, derived from a non-JPEG source (or with existing artifacts removed). After doing so, please tag the JPEG version with {{Superseded|NewImage.ext}} and remove this tag. This tag should not be applied to photographs or scans. If this image is a diagram or other image suitable for vectorisation, please tag this image with {{Convert to SVG}} instead of {{BadJPEG}}. If not suitable for vectorisation, use {{Convert to PNG}}. For more information, see {{BadJPEG}}. |  |
 | 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. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:54, 4 September 2010 | | 745 × 584 (64 KB) | F1jmm (talk | contribs) | électrodes d'arc |
| 17:28, 23 April 2008 |  | 745 × 584 (53 KB) | F1jmm (talk | contribs) | {{Information |Description= Émetteur radiotéléphonique à arc vers 1910. |Source= « œuvre personnelle » |Date= 20 Avril 2008 |Author= F1jmm |Permission= |other_versions= 2 }} Category:Telecommunications Category:Lueger/Telecommunication |
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- Usage on fr.wikipedia.org
