Flugmaschine. Erfunden von Jacob Degen in Wien, 1807. Technical illustration shows elevation and horizontal section of a man-powered flying machine constructed and tested unsuccessfully by Swiss watchmaker Jakob Degen living in Vienna in the early 1800s. A pair of heart-shaped, braced and movable wings are operated by arms and legs. Date ca. 1810.

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TOP23818731

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達志影像

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RM

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