Gramme dynamo. Illustration of the dynamo design and produced by Belgian engineer Zenobe Gramme (1826-1901). Dynamos are devices used to convert rotary motion into electrical power. This is achieved by rotating magnets around wires, and generates direct electrical currents. Artwork part of the 'Les merveilles de la science' series from 1878 by Louis Figuier.

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TOP26579950

Source:

達志影像

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RM

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須由TPG 完整授權

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