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balloon

(Encyclopedia) balloon, lighter-than-air craft without a propulsion system, lifted by inflation of one or more containers with a gas lighter than air or with heated air. During flight, altitude may…

aerodynamics

(Encyclopedia) aerodynamics, study of gases in motion. As the principal application of aerodynamics is the design of aircraft, air is the gas with which the science is most concerned. Although…

White, Robert Michael

(Encyclopedia) White, Robert Michael, 1924–2010, American aviator, b. New York City. A fighter pilot during World War II, he was shot down over Germany and held in a prisoner-of-war camp (Feb.–Apr,…

Mitchell, William

(Encyclopedia) Mitchell, William (Billy Mitchell), 1879–1936, American army officer and pilot, b. Nice, France. He enlisted (1898) in the U.S. army in the Spanish-American War and received a…

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 medicine

(Encyclopedia) aviation medicine, scientific study of the biological effects of aviation, especially on human beings. Although aviation medicine is concerned with such problems as the spread of…

equal-time rule

(Encyclopedia) equal-time rule, a Federal Communications Commission rule that requires equal air time for all major candidates competing for political office. It was preceded by the fairness doctrine…

Bossier City

(Encyclopedia) Bossier City Bossier City bōˈzhər [key], city (2020 pop. 62,701), Bossier parish, NW La., on the Red…

Guericke, Otto von

(Encyclopedia) Guericke, Otto vonGuericke, Otto vonôˈtō fən gāˈrĭkə [key], 1602–86, German physicist, noted for his study of pneumatics. He carried out his most important researches while burgomaster…

Malmstrom Air Force Base

(Encyclopedia) Malmstrom Air Force BaseMalmstrom Air Force Basemälmˈstrəm, mălmˈ– [key], U.S. military installation, 3,573 acres (1,446 hectares), W central Mont., E of Great Falls; est. 1942. During…