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Ritchey, George Willis

(Encyclopedia)Ritchey, George Willis, 1864–1945, American astronomer, b. Meigs co., Ohio, studied at the Univ. of Cincinnati (1883–84, 1886–87). He was superintendent of instrument construction (1899–1904) ...

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...

Doon

(Encyclopedia)Doon do͞on [key], river, c.30 mi (48 km) long, South Ayrshire and East Ayrshire, SW Scotland, flowing NW through Loch Doon (6 mi/9.7 km long) to the Firth of Clyde S of Ayr. Robert Burns celebrated i...

oxyacetylene torch

(Encyclopedia)oxyacetylene torch ŏkˌsēəsĕtˈəlēn [key], tool that mixes and burns oxygen and acetylene to produce an extremely hot flame. This torch can be used for cutting steel and for welding iron and var...

Rand, Ayn

(Encyclopedia)Rand, Ayn īn [key], 1905–82, American writer, b. St. Petersburg, Russia, as Alissa Rosenbaum. She came to the United States in 1926, became a citizen five years later, and worked for many years as ...

Fergusson, Robert

(Encyclopedia)Fergusson, Robert, 1750–74, Scottish poet, b. Edinburgh. He was a precursor of Robert Burns, who proclaimed his debt to Fergusson's Poems (1773). After careers in the clergy and in medicine, he work...

Nasmyth, Alexander

(Encyclopedia)Nasmyth, Alexander nāˈsmĭth [key], 1758–1840, Scottish landscape and portrait painter. His Stirling Castle (National Gall., London) is a good example of his simple, picturesque Scottish scenes. H...

erythema

(Encyclopedia)erythema ĕrˌəthēˈmə [key], more or less diffuse redness of the skin due to concentration of an abnormally large amount of blood within the small vessels of the skin (hyperemia), as in burns. Ery...

Tillett, Benjamin

(Encyclopedia)Tillett, Benjamin tĭlˈĭt [key], 1860–1943, English labor organizer, b. Bristol, England. With Tom Mann and John Burns, he led the dock strike of 1889, the first big step toward industrial unionis...

gas, fuel

(Encyclopedia)gas, fuel, gaseous substance that burns in air and releases enough heat to be useful as a fuel, while also remaining sufficiently stable at ordinary temperatures to permit long-term storage without de...