File:PSM V45 D238 Out of focus rings.jpg

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PSM_V45_D238_Out_of_focus_rings.jpg(606 × 284 pixels, file size: 46 KB, MIME type: image/jpeg)

Description Out of focus rings
Date
Source Popular Science Monthly Volume 45
Author Unknown authorUnknown author
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Extracted image from book, to grayscale, cropped whitespace. Modifications made by Ineuw. The original can be found here: Popular Science Monthly Volume 45.

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Date/TimeThumbnailDimensionsUserComment
current09:39, 16 February 2016Thumbnail for version as of 09:39, 16 February 2016606 × 284 (46 KB)IneuwCleaned image and improved contrast
09:37, 16 February 2016Thumbnail for version as of 09:37, 16 February 2016606 × 284 (46 KB)IneuwCleaned image and improved contrast
10:41, 18 February 2011Thumbnail for version as of 10:41, 18 February 2011607 × 226 (31 KB)Ineuw{{Information |Description = Out of focus rings |Source = [http://www.archive.org/details/popularsciencemo45newy Popular Science Monthly Volume 45] |Date = 1894 |Author = Unknown |Permission = {{PD-old}} |other_versi