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calcium hydroxide
(Encyclopedia) calcium hydroxide, Ca(OH)2, colorless crystal or white powder. It is prepared by reacting calcium oxide (lime) with water, a process called slaking, and is also known as hydrated lime…calorie
(Encyclopedia) calorie, abbr. cal, unit of heat energy in the metric system. The measurement of heat is called calorimetry. The calorie, or gram calorie, is the quantity of heat required to raise the…hydraulic machine
(Encyclopedia) CE5 Hydraulic pressure: In any hydraulic device the pressure exerted by one piston is transmitted throughout the fluid. Since pressure equals force divided by area, a small force (…first aid
(Encyclopedia) first aid, immediate and temporary treatment of a victim of sudden illness or injury while awaiting the arrival of medical aid. Proper early measures may be instrumental in saving life…sake
(Encyclopedia) sake, alcoholic beverage made from rice by fermentation. Although sake is sometimes called rice wine, and can have a smooth body and be quite aromatic, it has a higher alcohol content…shaduf
(Encyclopedia) shaduf or shadoofshadufboth: shəd&oobreve;fˈ, shäˈd&oobreve;f [key], primitive device used to lift water from a well or stream for irrigation purposes. Essentially the device…personal watercraft
(Encyclopedia) personal watercraft (PWC), a lightweight vessel usually less than 16 ft (5 m) long that uses an inboard water jet pump, powered by an internal-combustion engine, as its primary source…archerfish
(Encyclopedia) archerfish, laterally compressed fish, genus Toxotes, which catches insects by spitting at and disabling them. The archerfish has a groove in the roof of its mouth that forms a long…Devils Lake
(Encyclopedia) Devils Lake. 1 200 sq mi (520 sq km), NE central N.Dak., the largest natural body of water in the state. In an area of typically inland drainage, Devils Lake can range from a dry…dipper
(Encyclopedia) dipper, common name for the only aquatic member of the order Perciformes (perching birds) found near cold mountain streams. With their short, stubby wings and tails and their thick…Trending
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