File:PSM V45 D230 Image at the focus of a concave mirror.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:39, 18 February 2011 | 1,681 × 1,685 (151 KB) | Ineuw | {{Information |Description = Image at the focus of a concave mirror |Source = [http://www.archive.org/details/popularsciencemo45newy Popular Science Monthly Volume 45] |Date = 1894 |Author = Unknown |Permission = {{PD |
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