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Au

(Encyclopedia)Au, symbol for the element gold.

Kolyma

(Encyclopedia)Kolyma kŏlĭmäˈ, kōlēˈmə, Rus. kəlĭˈmə [key], river, c.1,500 mi (2,410 km) long, rising in several headstreams in the Kolyma and Cherskogo ranges, Russian Far East. It flows generally N to ...

Marshall, James Wilson

(Encyclopedia)Marshall, James Wilson, 1810–85, American pioneer, discoverer of gold in California, b. Hunterdon co., N.J. Migrating to California for his health, he arrived at Sutter's Fort (site of present Sacra...

cyanide

(Encyclopedia)cyanide sīˈənīdˌ [key], chemical compound containing the cyano group, –CN. Cyanides are salts or esters of hydrogen cyanide (hydrocyanic acid, HCN) formed by replacing the hydrogen with a metal...

videocassette recorder

(Encyclopedia)videocassette recorder (VCR), device that can record television programs or the images from a video camera on magnetic tape (see tape recorder); it can also play prerecorded tapes. A VCR converts the ...

Bjørndalen, Ole Einar

(Encyclopedia)Bjørndalen, Ole Einar, 1974–, Norwegian biathlete, generally regarded as the greatest champion in the history of the biathlon, a combination of cross-country skiing and target-shooting. He competed...

aqua regia

(Encyclopedia)aqua regia rēˈjēə [key] [Lat.,=royal water], corrosive, fuming yellow liquid prepared by mixing one volume of concentrated nitric acid with three to four volumes of concentrated hydrochloric acid....

Yukon, river, Canada and the United States

(Encyclopedia)Yukon yo͞oˈkŏn [key], river, c.2,000 mi (3,220 km) long, rising in Atlin Lake, NW British Columbia, Canada, and receiving numerous headwater streams; one of the longest rivers of North America. It ...

ring, piece of jewelry

(Encyclopedia)ring, small ornamental hoop usually worn on finger or thumb, but it may be attached to the ear or the nose. Finger rings made of bronze, gold, and silver from the period c.2600–1500 b.c. have been f...

international language

(Encyclopedia)international language, sometimes called universal language, a language intended to be used by people of different linguistic backgrounds to facilitate communication among them and to reduce the misun...