File:EB1911 - Lighthouse - Fig. 36.—Vertical Section. Prism of Dioptric Spherical Mirror.jpg
EB1911_-_Lighthouse_-_Fig._36.—Vertical_Section._Prism_of_Dioptric_Spherical_Mirror.jpg (378 × 117 pixels, file size: 16 KB, MIME type: image/jpeg)
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current | 19:54, 29 October 2020 | 378 × 117 (16 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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