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screw

(Encyclopedia)screw, simple machine consisting essentially of a solid cylinder, usually of metal, around which an inclined plane winds spirally, either clockwise or counterclockwise. It is used to fasten one object...

mercury, chemical element

(Encyclopedia)mercury or quicksilver [from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842℃; b.p. 356.58℃; sp. gr. 13.55...

Chladni, Ernst Florens Friedrich

(Encyclopedia)Chladni, Ernst Florens Friedrich ĕrnst flōˈrĕns frēˈdrĭkh klädˈnē [key], 1756–1827, German physicist. An authority on acoustics, he made studies of the transmission of sound in various gas...

Chomutov

(Encyclopedia)Chomutov khôˈmo͞otôf [key], Ger. Komotau, city, NW Czech Republic, near the German border...

Clichy

(Encyclopedia)Clichy klēshēˈ [key], suburb N of Paris, Hauts-de-Seine dept., N central France. It is a m...

Evansville

(Encyclopedia)Evansville, city (2020 pop. 117,298), seat of Vanderburgh co., extreme SW Ind., a port on the Ohio River; inc. 1819. It is a rail and river shipping and...

Holzer, Jenny

(Encyclopedia)Holzer, Jenny, 1950–, American artist, b. Gallipolis, Ohio. She links text and image in works of art composed of short aphorisms or longer declarations. Influenced by Dada, conceptual art, and femin...

Hickory, city, United States

(Encyclopedia)Hickory, city (2020 pop. 43,490), Burke and Catawba counties, W N.C., at the foot of the Blue Ridge Mts.; inc. 1870. It is a processing and trade center...

Jenney, William Le Baron

(Encyclopedia)Jenney, William Le Baron, 1832–1907, American engineer and architect, b. Fairhaven, Mass. He studied at Harvard Scientific School and the École des Beaux-Arts. Later he learned engineering, constru...

Nampa

(Encyclopedia)Nampa nămˈpə [key], city (1990 pop. 28,365), Canyon co., SW Idaho, in the fertile Treasure Valley; inc. 1890. It is the commercial, processing, and shipping center for an irrigated agricultural, or...