Galileo was the first to think to use a pendulum as a time keeper in 1637. An actual clock using the precise weighted mechanism was patented in 1656 by Dutch scientist Christiaan Huygens. Roughly 350 ...
Biological timekeeping : the body's rhythms -- Calendar : different drummers -- Early clocks : home-made beats -- The pendulum clock : the beat of nature -- Successors : ubiquitous timekeeping -- ...
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