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potassium carbonate

(Encyclopedia)potassium carbonate, chemical compound, K2CO3, white, crystalline, deliquescent substance that forms a strongly alkaline water solution. It is available commercially as a white, granular powder common...

propane

(Encyclopedia)propane, CH3CH2CH3, colorless, gaseous alkane. It is readily liquefied by compression and cooling. It melts at −189.9℃ and boils at −42.2℃. Propane occurs in nature in natural gas and (in diss...

Natuna Islands

(Encyclopedia)Natuna Islands, island group (2010 pop. 69,300), 769 sq mi (1,993 sq km), Riau prov., Indonesia, in the South China Sea between the Malay Peninsula (W) and Borneo (E). The more than 250 islands are pa...

Williston

(Encyclopedia)Williston, city (1990 pop. 13,131), seat of Williams co., NW N.Dak., on the Missouri River; inc. 1904. An early riverboating town, its importance increased with the arrival of the Great Northern Railw...

Bolkiah Mu'izzadin Waddaulah, Sir Hassanal

(Encyclopedia)Bolkiah Mu'izzadin Waddaulah, Sir Hassanal, 1946–, sultan of Brunei (1967–). He succeeded to the throne after the abdication of his father, Sultan Sir Omar Ali Saifuddin. Known as a playboy, he no...

Westinghouse, George

(Encyclopedia)Westinghouse, George, 1846–1914, American inventor and manufacturer, b. Central Bridge, N.Y. In the Civil War he served in the Union army and navy. Among his inventions in the railroad field were a ...

Gulf War syndrome

(Encyclopedia)Gulf War syndrome, popular name for a variety of ailments experienced by veterans after the Persian Gulf War. Symptoms reported include nausea, cramps, rashes, short-term memory loss, fatigue, difficu...

computer terminal

(Encyclopedia)computer terminal, a device that enables a computer to receive or deliver data. Computer terminals vary greatly depending on the format of the data they handle. For example, a simple early terminal co...

nitric oxide

(Encyclopedia)nitric oxide or nitrogen monoxide, a colorless gas formed by the combustion of nitrogen and oxygen as given by the reaction: energy + N2 + O2 → 2NO; m.p. −163.6℃; b.p. −151.8℃. Nitric oxide ...

heat

(Encyclopedia)heat, nonmechanical energy in transit, associated with differences in temperature between a system and its surroundings or between parts of the same system. The study of heat and its relationship ...