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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 ...
A model of the water clock. The Borugak Jagyeongnu ("Water Clock of Borugak Pavilion"), classified as a scientific instrument, is the 229th National Treasure of South Korea and was designated by the South Korean government on March 3, 1985. The water clock is currently held and managed by the National Palace Museum of Korea in Seoul.
There is a full description of the clock in the treatise Ktab 'Amal al-sa'at wa-l-amal biha (On the Construction of Clocks and their Use) written by Ridwan b. al Saati in 1203. This treatise describes the reconstruction by Ridwan of the water clock which was built by his father, Muhammad al-Saati, in the reign of Nur al-Din Mahmud b.
The designer of the clock was a muwaqqit named Abu al-Hassan ibn Ali Ahmed el-Tlemsani. [3]: 492 (see endnote 2) The clock may have followed similar principles as that of an earlier water clock built for the Dar al-Muwaqqit of the Qarawiyyin Mosque by Sultan Abu Said in 1317. [3]
The Clock of Flowing Time in Berlin. The Clock of Flowing Time (German: Uhr der fließenden Zeit) [1] is a 13 metres (43 ft) high water clock extending over three floors in the Berlin Europa-Center. The clock was designed by the French artist Bernard Gitton and set up in 1982.
Modern water clock by Bernard Gitton. Bernard Gitton (French pronunciation: [bɛʁnaʁ ʒitɔ̃]); born 24 June 1935 [1]) is a French physicist and artist who has built modern water clocks, fountains and other devices relating art and science. [2]
A reproduction of the elephant clock in the Ibn Battuta Mall, Dubai. A reproduction in Kasımiye Medrese, Mardin, Turkey. The timing mechanism is based on a water-filled basin hidden inside the elephant. In the bucket is a deep bowl floating in the water, but with a small hole in the centre. The bowl takes half an hour to fill through this hole.
The water clock was created by Bernard Gitton, a French physical chemist and artist who combines those two studies by creating water clocks, water calculators, fountains, and other items of art and science. Bernard began making items of artistic science in 1979, at the age of 43, when he left the world of research science to create scientific art.