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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 ...
Ctesibius' water clock, as visualized by the 17th-century French architect Claude Perrault. Ctesibius or Ktesibios or Tesibius (Ancient Greek: Κτησίβιος; fl. 285–222 BCE) was a Greek inventor and mathematician in Alexandria, Ptolemaic Egypt. [1] Very little is known of Ctesibius' life, but his inventions were well known in his ...
A limestone Egyptian water clock, 285–246 BC (Oriental Institute, Chicago). The oldest description of a clepsydra, or water clock, is from the tomb inscription of an early 18th Dynasty (c. 1500 BC) Egyptian court official named Amenemhet, who is identified as its inventor. [27]
Category:Egyptian hieroglyphs: fishes and parts of fishes (0) L § Invertebrata and lesser animals: Category:Egyptian hieroglyphs: invertebrates and lesser animals (3) M § Trees and plants: Category:Egyptian hieroglyphs: trees and plants (6) N § Sky, earth, water: Category:Egyptian hieroglyphs: sky-earth-water (16) NU § Upper nile
Clepsydra may refer to: Clepsydra, an alternative name for a water clock . In ancient Greece, a device (now called a water thief ) for drawing liquids from vats too large to pour, which utilized the principles of air pressure to transport the liquid from one container to another.
Korean Water Clocks: Jagyongnu, The Striking Clepsydra and The History of Control and Instrumentation Engineering (in Korean). Seoul: Konkuk University Press. Seoul: Konkuk University Press. Nam, Moon-Hyon (1998).
An early 19th-century illustration [1] of Ctesibius's clepsydra from the 3rd century BC. The hour indicator ascends as water flows in. Also, a series of gears rotate a cylinder to correspond to the temporal hours. An automaton clock or automata clock is a type of striking clock featuring automatons. [2]
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