File:Fresnel lighthouse lens diagram.png

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Fresnel_lighthouse_lens_diagram.png ‎(492 × 578 pixels, file size: 88 KB, MIME type: image/png)

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current10:03, 17 December 2007Thumbnail for version as of 10:03, 17 December 2007492 × 578 (88 KB)commons>Chetvorno{{Information |Description=Diagram of how a Fresnel lens in a lighthouse works. |Source=Downloaded from [http://books.google.com/books?id=sKELAAAAYAAJ&pg=PA328 Adolphe Ganot (1872) ''Natural Philosophy for General Readers and Young Persons'', D. Appleton

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