Columbia Encyclopedia

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Caño Cristales

(Encyclopedia)Caño Cristales, river, c.62 mi (100 km) long, central Colombia, rising in Serranía de la Macarena National Park and flowing SE to the Guayabero River. Also known as the “River of Five Colors” or...

carbon black

(Encyclopedia)carbon black, mixture of partially burned hydrocarbons. Carbon black is produced by partial combustion of natural gas. It is used as a black pigment for inks and paints, and is used in large amounts b...

Kent State University

(Encyclopedia)Kent State University, mainly at Kent, Ohio; coeducational; founded 1910 as a normal school, became Kent State College in 1929, gained university status in 1935. The university's academic programs and...

Germiston

(Encyclopedia)Germiston jûrˈmĭstən [key], city, now part and seat of Ekurhuleni metropolitan municipality, Gauteng prov., NE South Africa, on the Witwatersrand. The chief industries are gold mining and processi...

ammonium sulfate

(Encyclopedia)ammonium sulfate, chemical compound, (NH4)2SO4, a colorless-to-gray, rhombohedral crystalline substance that occurs in nature as the mineral mascagnite. It is soluble in water and insoluble in alcohol...

flamethrower

(Encyclopedia)flamethrower, mechanism for shooting a burning stream of liquid or semiliquid fuel at enemy troops or positions. Primitive types of flamethrowers, consisting of hollow tubes filled with burning coals,...

Dewar flask

(Encyclopedia)Dewar flask [for Sir James Dewar], container after which the common thermos bottle is patterned. It consists of two flasks, one placed inside the other, with a vacuum between. The vacuum prevents the ...

amalgam

(Encyclopedia)amalgam əmălˈgəm [key], alloy containing mercury. The alloy may be liquid or solid, depending on the proportion of mercury, although all naturally occurring amalgams, i.e., those of gold and silve...

cake

(Encyclopedia)cake, originally a small mass of dough baked by turning on a spit; in present usage a dessert made of flour, sugar, eggs, seasonings, usually some leavening and liquid besides the eggs, and shortening...

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...