Water clock - Wikipedia
A water clock or clepsydra (from Ancient Greek κλεψύδρα (klepsúdra) 'pipette, water clock'; from κλέπτω (kléptō) 'to steal' and ὕδωρ (hydor) 'water'; lit. ' water thief ' ) is a timepiece by which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel, and where the amount ...
Clepsydra | Ancient, Water, Sundial | Britannica
Clepsydra, ancient device for measuring time by the gradual flow of water. One form, used by the North American Indians and some African peoples, consisted of a small boat or floating vessel that shipped water through a hole until it sank.
Ancient Greece: The Water Clock (Clepsydra) Of Ktesibios
Around 325 BC work began on Clepsydra, the Ancient Greek water clock. Shortly after water clocks were placed in public places in Ancient Greece. Most often you could see them in court, to limit the speech time of both lawyers and witnesses.
As Old As Time: Ancient Invention of the Water Clock
2024年4月29日 · Around 325 BC, water clocks began to be used by the Greeks, who called this device the clepsydra (‘water thief’). One of the uses of the water clock in Greece, especially in Athens, was for the timing of speeches in law courts.
Clepsydra Definition & Meaning - Merriam-Webster
The ancient Greeks called their water clocks "klepsydra" ("water thief"), which comes from "kleptein" ("to steal") and "hydōr" ("water"). English speakers stole "clepsydra" from the Greeks in the 16th century, but actual water clocks have become increasingly rare.
Clepsydra of Karnak - Egypt Museum
Clepsydra of Karnak. The Clepsydra of Karnak has 12 carved columns of 11 false holes, corresponding to the hours of the night. The water flowed through a very small hole made in the center of the bottom, emerging on the outside under the figure of a seated baboon.
Historical development of water-powered mechanical clocks
2021年2月19日 · A water clock, or clepsydra, is a timepiece with which time is measured by regulating the flow of water (sometimes mercury) into or out of a vessel, or a clepsydra, and observing the changes in the amount of water (or mercury) in the vessel (Hua, 1991).
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