water clock


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water clock:

see clepsydraclepsydra
or water clock,
ancient device for measuring time by means of the flow of water from a container. A simple form of clepsydra was an earthenware vessel with a small opening through which the water dripped; as the water level dropped, it exposed marks on the
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.

water clock

[′wȯd·ər ‚kläk]
(horology)
An ancient device to estimate time; the operation depended upon the slow emptying of water from one graduated vessel into another, and the graduations marked the time periods.
References in periodicals archive ?
It was time to move on from sundials, hourglasses and water clocks.
As an extension, have them try to adjust their water clocks to measure exactly 30 seconds or 1 minute.
The water clocks used in China were just the opposite.
Non-mechanical devices for measuring time like a water clock, candle and sand-timer are to be built into the wall.
King Sejong's other important scientific inventions, such as the sundial, water clock and rain gauge, will be displayed in front of the statue.
Visitors had hands-on experience of Zheng He model boat, Elephant Water Clock and two South-Facing Chariots encouraging visitors of all ages to discover and understand some aspects of the contribution of historic scholars to science and technology.
The most precise time-keeping device of the ancient world was the water clock, or clepsydra, one of which was found in the tomb of the Egyptian pharaoh Amenhotep I (1525-1504 BC).
Across the street from it stands the remains of Fes's once-grand medieval water clock, now ruined.
Champion dancers from Cuban Grove, who have featured on BBC TV's Strictly Come Dancing, were the stars, helping workers at Severn Trent Water clock up more than pounds 107,000.
After a "prologue" station dedicated to an Egyptian water clock, one came upon a Neolithic bone, various seventeenth-century treatises, and Nam June Paik's The Moon Is the Oldest TV, 1965, all of which contained references to the celestial phenomena at the origin of every measurement of time.
I walked up to it and realized that it wasn't just a sculpture, it was actually a giant water clock.
But the star of the garden was the now-famous water clock which the Queen took a shine to when she visited our garden.