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base line

(Encyclopedia)base line: see geodesy.

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...

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...

Line Islands

(Encyclopedia)Line Islands or Equatorial Islands, coral group, 43 sq mi (111 sq km), central and S Pacific. Once valuable for their guano deposits, the islands now have coconut groves, airfields, and meteorological...

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 ...

international relations

(Encyclopedia)international relations, study of the relations among states and other political and economic units in the international system. Particular areas of study within the field of international relations i...

Kiwanis International

(Encyclopedia)Kiwanis International kĭwäˈnĭs [key], community service organization of active and retired business and professional people, founded in 1915 at Detroit, Mich. Local Kiwanis clubs now exist in more...

dark-line spectrum

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

bright-line spectrum

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

international law

(Encyclopedia)international law, body of rules considered legally binding in the relations between national states, also known as the law of nations. It is sometimes called public international law in contrast to p...