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aviation

(Encyclopedia)aviation, operation of heavier-than-air aircraft and related activities. Aviation can be conveniently divided into military aviation, air transport, and general aviation. Military aviation includes al...

Bonanza Creek

(Encyclopedia)Bonanza Creek, stream, c.20 mi (30 km) long, W Yukon, Canada. It flows NW to the Klondike River near Dawson. The first gold strike in the Yukon occurred there in 1896. ...

Lynn

(Encyclopedia)Lynn, city (1990 pop. 81,245), Essex co., E Mass.; inc. as a town 1631, as a city 1850. Lynn is an old industrial center. The first ironworks (1643) and the first fire engine (1654) in the country wer...

California Institute of Technology

(Encyclopedia)California Institute of Technology, at Pasadena, Calif.; originally for men, became coeducational in 1970; founded 1891 as Throop Polytechnic Institute; called Throop College of Technology, 1913–20....

kerosene

(Encyclopedia)kerosene or kerosine, colorless, thin mineral oil whose density is between 0.75 and 0.85 grams per cubic centimeter. A mixture of hydrocarbons, it is commonly obtained in the fractional distillation o...

Geysir

(Encyclopedia)Geysir gāˈsĭr [key], hot spring, SW Iceland, c.75 mi (120 km) W of Reykjavík. Although in medieval times it erupted three times daily, weeks now elapse between eruptions. The height and temperatur...

Shiel, Loch

(Encyclopedia)Shiel, Loch lŏkh shēl [key], lake, 17 mi (27 km) long and 1 mi (1.6 km) wide, Highland, W Scotland. It is drained by a short stream into Loch Moidart. ...

Yazoo

(Encyclopedia)Yazoo yăzˈo͞o [key], river, 188 mi (303 km) long, formed in W central Miss. by the confluence of the Tallahatchie and Yalobusha rivers. Prevented by natural levees from joining the Mississippi Rive...

airplane

(Encyclopedia)CE5 A. Side view of jet-propelled airplane B. Top view airplane, aeroplane, or aircraft, heavier-than-air vehicle, mechanically driven and fitted with fixed wings that support it in flight thro...

Johnson, John Harold

(Encyclopedia)Johnson, John Harold, 1918–2005, African-American magazine publisher, b. Arkansas City, Ark. The son of a mill worker, he began his career editing a Chicago insurance company magazine. In 1942 he st...