Columbia Encyclopedia

Search results

500 results found

Holm, Jeanne Marjorie

(Encyclopedia)Holm, Jeanne Marjorie, 1921–2010, U.S. military officer, the first female general in the U.S. air force, b. Portland, Oreg. Enlisting in the Women's Army Auxiliary Corps in 1942, she soon joined (19...

cluster munitions

(Encyclopedia)cluster munitions or cluster bombs, air-dropped or ground-launched weapons that open in mid-air and scatter dozens, hundreds, or thousands of smaller submunitions (or bomblets) over a wide area. Such ...

Jones, David Charles

(Encyclopedia)Jones, David Charles, 1921–2013, American military officer, b. Aberdeen, S. Dak., studied Univ. of N Dakota and Minot State College. He joined the Army Air Corps at the outbreak of World War II, and...

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, 1945); he was...

airmail

(Encyclopedia)airmail, transport of mail by airplanes. Demonstration flights that showed the feasibility of carrying mail by air were made in Great Britain and in the United States in 1911. In the United States, af...

Schneiderman, Rose

(Encyclopedia)Schneiderman, Rose shnīˈdərmən [key], 1884–1972, American labor leader, b. Poland. She emigrated to the United States in 1890. After working as a lining stitcher in a cap factory, she was instru...

Keflavík

(Encyclopedia)Keflavík kĕpˈlävēkˌ [key], town (1993 pop. 7,584), SW Iceland, on the Faxaflói, W of Reykjavík. It is a major fishing port, best known for its large international airport, which was built by t...

Archimedes' principle

(Encyclopedia)Archimedes' principle, principle that states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid. The principle applies to both floating and submerged bo...

Myers, Richard Bowman

(Encyclopedia)Myers, Richard Bowman, 1942–, American Air Force general, b. Kansas City, Mo. He studied at Kansas State Univ., graduating and joining the Air Force in 1965; he later attended Auburn Univ. (M.A., 19...

pressure

(Encyclopedia)pressure, in mechanics, ratio of the force acting on a surface to the area of the surface; it is thus distinct from the total force acting on a surface. A force can be applied to and sustained by a si...
 

Browse by Subject