Columbia Encyclopedia

Search results

129 results found

fatigue, in engineering

(Encyclopedia)fatigue, in engineering, microscopic cracking of materials, especially metals, after repeated applications of stress. Fissures may be formed within pieces of metal during their manufacture when, while...

Grumman, Leroy Randle

(Encyclopedia)Grumman, Leroy Randle, 1895–1982, American aviation pioneer and aerospace executive, b. Huntington, N.Y. After graduating from Cornell (1916), he joined the U.S. navy, where he served as a flight in...

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...

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...

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...

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...

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...

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...

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...