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(Encyclopedia)International, any of a succession of international socialist and Communist organizations of the 19th and 20th cent. After World War I, the Second International was revived (1919) by moderate social...

International Geophysical Year

(Encyclopedia)International Geophysical Year (IGY), 18-month period from July, 1957, through Dec., 1958, during a period of maximum sunspot activity, designated for cooperative study of the solar-terrestrial enviro...

American International Group

(Encyclopedia)American International Group (AIG), American multinational insurance corporation whose potential bankruptcy in 2008 led to the largest federal bailout of a private company. AIG was founded as American...

dark-line spectrum

(Encyclopedia)dark-line spectrum: see spectrum. ...

Oder-Neisse line

(Encyclopedia)Oder-Neisse line, frontier established in 1945 between Germany and Poland; it followed the Oder and W Neisse rivers from the Baltic Sea to the Czechoslovak border. The boundary, desired by most Poles ...

Mason-Dixon Line

(Encyclopedia)Mason-Dixon Line, boundary between Pennsylvania and Maryland (running between lat. 39°43′26.3″N and lat. 39°43′17.6″N), surveyed by the English team of Charles Mason, a mathematician and ast...

bright-line spectrum

(Encyclopedia)bright-line spectrum: see spectrum. ...

longitude

(Encyclopedia)longitude lŏnˈjĭto͞odˌ [key], angular distance on the earth's surface measured along any latitude line such as the equator east or west of the prime meridian. A meridian of longitude is an imagin...

international language

(Encyclopedia)international language, sometimes called universal language, a language intended to be used by people of different linguistic backgrounds to facilitate communication among them and to reduce the misun...