File:Pénaud's flying models (cropped).jpg
Pénaud's_flying_models_(cropped).jpg (500 × 219 pixels, file size: 56 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionPénaud's flying models (cropped).jpg |
English: Three of Alphonse Pénaud's flying models. Top to bottom: the Hèlicoptère, the Planophore and the flapping wing Mechanical Bird. Early 1870s. |
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Date | ||||
Source | Encyclopaedia Britannica (?) | |||
Author | Unknown authorUnknown author | |||
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[edit]Public domainPublic domainfalsefalse |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:32, 10 May 2021 | ![]() | 500 × 219 (56 KB) | NiD.29 (talk | contribs) | File:Pénaud's flying models.jpg cropped 71 % vertically using CropTool with precise mode. |
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