File:Periscope View, Book Of Knowledge, 1900s.jpg
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Viewpoint of a WWI-era submarine; according to the associated article from The Book Of Knowledge, this worked like a camera obscura, projecting a panoramic, circular view of the submarine's surroundings onto a white table-top surface. 1910s.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:01, 21 April 2009 | | 2,267 × 2,500 (742 KB) | AzraelBrown (talk | contribs) | Viewpoint of a WWI-era submarine; according to the associated article from The Book Of Knowledge, this worked like a ''camera obscura'', projecting a panoramic, circular view of the submarine's surroundings onto a white table-top surface. 1910s. |
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