File:Fresnel only.JPG
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Fresnel_only.JPG (420 × 336 pixels, file size: 11 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:47, 28 July 2008 | 420 × 336 (11 KB) | commons>Deuxdad | {{Information |Description={{en|1=View of Fresnel lens window cover used on passive infrared motion detector. Lit from behind by a point light source}} |Source=Photographed and uploaded by me. |Author=Jack LaRosa |Date=07-26-08 |Permission= |other_version |
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