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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 ...
Water clock (representing a clock at the royal court in Paris, c.1250) The first innovations to improve on the accuracy of the hourglass and the water clock occurred in the 10th century, when attempts were made to slow their rate of flow using friction or the force of gravity. [78]
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.
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]
'House of the Clock') is a 14th-century building in Fes, Morocco, built by the Marinid Sultan Abu Inan Faris which houses a weight-powered water clock. It is located opposite the Bou Inania Madrasa on Tala'a Kebira street and was created to serve that madrasa and its mosque, which was also built by Abu Inan around the same time.
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.
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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.