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Several important watch inventions - George Graham invented mercurial compensation pendulum and dead-beat escapement for clocks, John Harrison invented grid-iron compensation pendulum and George Graham invented the cylinder escapement. (1 janv. 1720 – 1 janv. 1750)

Ajouté au bande de temps:

Maths - History of time

ByCharlotte Best
21 nov. 2019
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Date:

1 janv. 1720
1 janv. 1750
~ 30 years
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