![](https://nthumb.tpgimages.com/mid2_ocom_img/ZXZlcmV0dF9jb2xsZWN0aW9u/20110317_rm/2011031817/top_20110318171442_2958.jpg/TOP07371418.jpg)
A hand cranked device onsisting of coiled metal wire and a magnet, demonstrate the principle elements of 19th and 20th century electrical generators, also called dynamos. Illustration from DYNAMO-ELECTRICITY, 1884 by George B. Prescott.
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Details
Creative#:
TOP07371418
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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NO
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NO
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No
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