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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 ...
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.
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 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.
Islamic water clocks, which used complex gear trains and included arrays of automata, were unrivalled in their sophistication until the mid-14th century. [40] [41] Liquid-driven mechanisms (using heavy floats and a constant-head system) were developed that enabled water clocks to work at a slower rate. [41]
Baltimore City officials are advising immunocompromised individuals, as well as some young children and the elderly, to avoid drinking tap water across a large swath of its service area in the ...
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.
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