File:Cordouan6.jpg
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[edit]DescriptionCordouan6.jpg |
English: In 1854, Fresnel’s first lens was removed and a ... 1st order lens wasinstalled. That lens is still in use today.
Français : Détail du système lenticulaire de Fresnel du phare de Cordouan. |
Date | |
Source | Own work |
Author | Thibault Grouas |
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GPL |
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This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This work is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See version 2 and version 3 of the GNU General Public License for more details.http://www.gnu.org/licenses/gpl.htmlGPLGNU General Public Licensetruetrue |
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current | 16:50, 3 November 2006 | ![]() | 601 × 900 (197 KB) | Thibsweb (talk | contribs) | {{Information |Description=Détail du système lenticulaire à Fresnel du phare de Cordouan |Source=oeuvre personelle |Date=17-08-2005 |Author=Thibault Grouas |Permission=GPL |other_versions=none }} |
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