1574788 Edison\'s phonometer, 1878; (add.info.: Edison\'s phonometer which used the energy generated by speech to drive a flywheel. He claimed the power could be usded to drill a hole in a wooden wall. From \'\'La Nature\'\', Paris, 1878.); Universal History Archive/UIG; out of copyright.
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Creative#:
TOP27377208
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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