Pendulum escapements. 19th century diagrams of clock pendulums. The first pendulum clock was made by Christiaan Huygens in 1656, heralding the beginning of accurate time measurement. Engraving from 'Recherches sur les perfectionnements a introduire dans les pendules de chemin es' by Henry Robert and Charles Wheatstone (1857).
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Creative#:
TOP10705655
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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