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flame test

(Encyclopedia)flame test, test used in the identification of certain metals. It is based on the observation that light emitted by any element gives a unique spectrum when passed through a spectroscope. When a salt ...

Crookes tube

(Encyclopedia)Crookes tube, device invented by Sir William Crookes (c.1875) consisting essentially of a sealed glass tube from which nearly all the air has been removed and through the walls of which are passed two...

Huntington Park

(Encyclopedia)Huntington Park, city (2020 pop. 56,531), Los Angeles co., S Calif., a residential and industrial suburb of Los Angeles; founded 1856, inc. 1906. Its va...

Koolhaas, Rem

(Encyclopedia)Koolhaas, Rem (Remmet Lucas Koolhaas), 1944–, Dutch architect, b. Rotterdam. He began his career as a journalist and screenwriter, moving to London in the late 1960s to study architecture. Koolhaas ...

Ando, Tadao

(Encyclopedia)Ando, Tadao tädäō ändō [key], 1941–, Japanese architect, b. Osaka. The majority of his buildings are in Japan; he is particularly known for religious structures and museums. Informally apprenti...

kaleidoscope

(Encyclopedia)kaleidoscope kəlīˈdəskōp [key], optical instrument that uses mirrors to produce changing symmetrical patterns. Invented by the Scottish physicist Sir David Brewster in 1816, the device is usually...

sextant

(Encyclopedia)CE5 Sextant sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical position or for other n...

Wilson, Robert

(Encyclopedia)Wilson, Robert, 1941–, dramatist, director, and designer, b. Waco, Tex. He began his arts career as a painter. A leading figure in postmodern theater since 1963, when he arrived in New York City, he...

platinite

(Encyclopedia)platinite, alloy that is 46% nickel and 54% iron. It is used in the manufacture of electric lightbulbs because its coefficient of expansion, i.e., the rate at which its volume increases with temperatu...

Warley

(Encyclopedia)Warley, urban area (1991 pop. 152,455), Sandwell metropolitan district, central England. Warley is highly industrialized; its manufactures include machinery, fabricated metal products, chemicals, and ...