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Percier, Charles

(Encyclopedia) Percier, CharlesPercier, Charlesshärl pĕrsyāˈ [key], 1764–1838, French architect. He won (1786) the Grand Prix de Rome, and in 1794 he became associated with Pierre François Léonard…

tornado

(Encyclopedia) tornado, dark, funnel-shaped cloud containing violently rotating air that develops below a heavy cumulonimbus cloud mass and extends toward the earth. The funnel twists about, rises…

Mayakovsky, Vladimir Vladimirovich

(Encyclopedia) Mayakovsky, Vladimir VladimirovichMayakovsky, Vladimir Vladimirovichvlədyēˈmĭr vlədyēˈmĭrəvĭch mīˌəkôfˈskē [key], 1893–1930, Russian poet and dramatist. Mayakovsky was a leader of the…

Lanfranco, Giovanni

(Encyclopedia) Lanfranco, GiovanniLanfranco, Giovannijōvänˈnē länfrängˈkō [key], 1582–1647, Italian painter. Lanfranco is considered one of the foremost artists of the High Baroque. He was trained by…

Langmuir, Irving

(Encyclopedia) Langmuir, IrvingLangmuir, Irvinglăngˈmy&oomacr;r [key], 1881–1957, American chemist, b. Brooklyn, N.Y. Associated (1909–50) with the research laboratory of the General Electric…

Hoyle, Sir Fred

(Encyclopedia) Hoyle, Sir FredHoyle, Sir Fredhoil [key], 1915–2001, British astrophysicist and mathematician, b. Bingley, Yorkshire. During the years of World War II, Hoyle primarily worked on…

Glaser, Donald Arthur

(Encyclopedia) Glaser, Donald Arthur, 1926–2013, American physicist, b. Cleveland, Ph.D. California Institute of Technology, 1950. He was a professor at the Univ. of Michigan from 1950 to 1959, when…

reconnaissance satellite

(Encyclopedia) reconnaissance satellite, artificial satellite launched by a country to provide intelligence information on the military activities of foreign countries. There are four major types.…

weather satellite

(Encyclopedia) weather satellite, artificial satellite used to gather data on a global basis for improvement of weather forecasting. Information includes cloud cover, storm location, temperature, and…