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Thomasville

(Encyclopedia)Thomasville. 1 City (1990 pop. 17,457), seat of Thomas co., SW Ga., near the Fla. line; inc. 1831. It is a farm trade center, with a large fresh-vegetable market. Manufactures include lumber, clothing...

dipper

(Encyclopedia)dipper, common name for the only aquatic member of the order Perciformes (perching birds) found near cold mountain streams. With their short, stubby wings and tails and their thick brownish plumage, d...

mudskipper

(Encyclopedia)mudskipper, name for fish of several genera in the subfamily Oxudercinae of the goby family, found in coastal waters of the Indian and Pacific oceans and on the Atlantic coast of Africa. The typically...

Brigham City

(Encyclopedia)Brigham City, city (2020 pop. 19,650), seat of Box Elder co., N Utah; inc. 1869. It is the center of a large farm area served by the Ogden River project...

Rickover, Hyman George

(Encyclopedia)Rickover, Hyman George, 1900–1986, American admiral, b. Russia. In World War II he served as head of the electrical section of the navy's Bureau of Ships. After the war he was assigned (1946) to the...

Palmdale

(Encyclopedia)Palmdale, city (1990 pop. 68,842), Los Angeles co., S Calif., in the irrigated Antelope Valley; a growing residential suburb of Los Angeles near Little Rock Creek where it forms Lake Palmdale Reservoi...

sandblast

(Encyclopedia)sandblast, stream of sand or other abrasive particles driven by a jet of compressed air or water or by centrifugal force against a surface to clean or abrade it. When centrifugal force is used, the ab...

rocket, in aeronautics

(Encyclopedia)CE5 Relative positions of the components of the Saturn V rocket, the U.S. space vehicle used in the moon missions rocket, any vehicle propelled by ejection of the gases produced by combustion of s...

Marsh test

(Encyclopedia)Marsh test, method for the detection of arsenic, so sensitive that it can be used to detect minute amounts of arsenic in foods (the residue of fruit spray) or in stomach contents. The sample is placed...

Campbell, Donald Malcolm

(Encyclopedia)Campbell, Donald Malcolm, 1921–67, British automobile and boat racer. The son of Sir Malcolm Campbell, from whom he inherited his passion for assaulting speed records and his mechanical inclinations...