How To Use Water clock In A Sentence
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Over thousands of years, the accuracy of maps didn't improve significantly faster than the accuracy of primitive timepieces such as the sundial or water clock.
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The invention of timekeeping devices - hourglasses, water clocks, graduated tapers - made it possible for early civilized people to begin to control and standardize the units of time, and in doing so to coordinate their lives.
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He designed a lotus clepsydra, that is a water clock which had a bowl shaped like a lotus flower on the top into which water dripped.
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The sundial's nocturnal counterpart, the water clock, was designed to measure temporal hours at night.
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They were originally part of a rococco clepsydra, or water clock, that featured the twelve animals of the Chinese zodiac and was affixed to a pavilion inspired by Versailles.
The Affair of the Chinese Bronze Heads
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He is also said to have constructed a armillary sphere, a water clock, and a bronze gnomon, a pointer whose shadow gives the time of mid-day.
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Further back, the Chinese and the Romans used clepsydras (water clocks) at about the same time, although Egyptian sundials go further back.
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Of course the sun could not be used to tell the time at night and clepsydras or water clocks were in use in Egypt by 1500 BC.
