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clock
measurement device
reconstruction of the waterpowered mechanical clock
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Apr. 7, 2024, 1:31 AM ET (Newsweek)
Melania's Appearance With Donald Trump Sparks Mockery: 'Checking the Clock'
clock, mechanical or electrical device other than a watch for displaying time. A clock is a machine in which a device that performs regular movements in equal intervals of time is linked to a counting mechanism that records the number of movements. All clocks, of whatever form—whether 12-hour clocks or 24-hour clocks—are made on this principle. See also atomic clock; nuclear clock. The origin of the all-mechanical escapement clock is unknown; the first such devices may have been invented and used in monasteries to toll a bell that called the monks to prayers. The first mechanical clocks to which clear ...(100 of 2239 words)