File:EB1911 - Lighthouse - Fig. 28.—Catadioptric or Reflecting Prism.jpg
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EB1911_-_Lighthouse_-_Fig._28.—Catadioptric_or_Reflecting_Prism.jpg (313 × 294 pixels, file size: 14 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:43, 29 October 2020 | 313 × 294 (14 KB) | DivermanAU | improve contrast | |
05:52, 29 October 2020 | 313 × 294 (7 KB) | DivermanAU | Uploaded a work by {{anonymous}} from Encyclopædia Britannica (11th ed.), v. 16, 1911, "Lighthouse" article, pp. 631 ff.; modified from https://www.gutenberg.org/files/41472/41472-h/41472-h.htm#ar2 with UploadWizard |
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