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Clepsydra
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. * Clepsydra Geyser Clepsydra Geyser is a geyser in the Lower Geyser Basin of Yellowstone National Park in the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily lo ... in the Lower Geyser Basin of Yellowstone * ''Clepsydra'' (diatom), a genus of protists * Klepsydra well on the Akropolis. {{disambiguation ...
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Clepsydra Geyser
Clepsydra Geyser is a geyser in the Lower Geyser Basin of Yellowstone National Park in the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... Clepsydra plays nearly continuously to heights of . It was named by T. B. Comstock during the 1878 Captain Jones expedition, with its nomenclature derived from the Greek word for water clock. Prior to the 1959 Hebgen Lake earthquake, it erupted regularly every three minutes. References {{Wyoming Geysers of Wyoming Geothermal features of Teton County, Wyoming Geothermal features of Yellowstone National Park Geysers of Teton County, Wyoming ...
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Water Clock
A water clock or clepsydra (; ; ) 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 is then measured. Water clocks are one of the oldest time-measuring instruments. The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon, Egypt, and Persia around the 16th century BC. Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain. Some authors, however, claim that water clocks appeared in China as early as 4000 BC. Water clocks were also used in ancient Greece and ancient Rome, described by technical writers such as Ctesibius and Vitruvius. Designs A water clock uses the flow of water to measure time. If viscosity is neglected, the physical principle required to study such clocks is Torricelli's law. There are two types of water clocks: inflow and outflo ...
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Clepsydra (diatom)
''Clepsydra'' is a genus of diatoms, including the species '' Clepsydra truganiniae''. It was found in Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ....Vyverman, W.; Sabbe, K.; Mann, D.; Vyverman, R.; Hodgson, D.A.; Muylaert, K.; Vanhoutte, K. (1998). Clepsydra truganiniae gen. nov., spec. nov. prov. from Tasmanian highland lakes and its relationships with other amphoroid diatoms. Biol. Jb. Dodonaea 65: 205. In: Biologisch Jaarboek (Dodonaea). Koninklijk Natuurwetenschappelijk Genootschap Dodonaea: Gent. ISSN 0366-0818 References External linksPaper on new genus Diatom genera Natural history of Tasmania {{Diatom-stub ...
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Water Thief
The term "water thief" refers to three devices – one ancient and two modern. # A water thief is a synthetic rubber fitting that attaches to an unthreaded faucet (American English) / tap (British English) on one end and a common garden hose on the other. It is commonly used to fill fresh water tanks in recreational vehicles when a threaded hose bib is not available. # A water thief allows firefighters to break down one larger line into several smaller ones, each with independent control of water flow at the valve. # Another device, used in antiquity, was called a "water thief" or " clepsydra". Carl Sagan described it in his book ''Cosmos'' as "... a brazen sphere with an open neck and small holes in the bottom, it is filled by immersing it in water. If you pull it out with the neck uncovered, the water pours out of the holes, making a small shower. But if you pull it out properly, with the neck covered, the water is retained in the sphere until you lift your thumb."Robe ...
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