File:Fresnel lens focal length.png

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Fresnel_lens_focal_length.png ‎(415 × 226 pixels, file size: 37 KB, MIME type: image/png)

A Fresnel lens focal length (f) and diameter is (φ). (Image: Davis and Kühnlenz, 2007)

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Date/TimeThumbnailDimensionsUserComment
current13:53, 31 October 2017Thumbnail for version as of 13:53, 31 October 2017415 × 226 (37 KB)Paulo Pacheco (talk | contribs)
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Horizontal resolution 49.61 dpc
Vertical resolution 49.61 dpc

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