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1international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
2Commutator (electric) — This article is about the electrical component. For mathematical concept, see Commutator . A tiny 5 segment commutator less than 2 mm in diameter, on a direct current motor in a toy radio control ZipZaps car. A commutator is a rotary electri …
3Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… …
4Naval mine — Polish wz. 08/39 contact mine. The protuberances around the top of the mine, called Hertz horns, are part of the detonation mechanism …
5Military history of Canada — This article is part of a series Conflicts …
6Byzantine–Arab Wars — Infobox Military Conflict caption=Greek fire, first used by the Byzantine Navy during the Byzantine Arab Wars. conflict=Byzantine Arab Wars partof=the Muslim conquests date=629 1180 place=Palestine, Syria, Egypt, North Africa, Anatolia, Crete,… …
