surface effects ship
71Anti-frogman techniques — are security methods developed to protect watercraft, ports and installations, and other sensitive resources both in or nearby vulnerable waterways from potential threats or intrusions by frogmen or other divers.Risks and threats to be defended… …
72electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
73Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
74Battleship — For other uses, see Battleship (disambiguation). The firepower of a battleship demonstrated by USS Iowa (ca. 1984) A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were large …
75Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
76Project Orion (nuclear propulsion) — An artist s conception of the NASA reference design for the Project Orion spacecraft powered by nuclear propulsion. Project Orion was a study of a spacecraft intended to be directly propelled by a series of explosions of atomic bombs behind the… …
77List of Doctor Who monsters and aliens — This is a list of monsters and aliens from the long running BBC science fiction television series Doctor Who . The list includes some races which are not extraterrestrial, but are nonetheless non human. This list is meant to cover alien races and …
78Attack on Sydney Harbour — Infobox Military Conflict conflict=Attack on Sydney Harbour partof=the Battle for Australia during World War II caption=1 June 1942. A Japanese Ko hyoteki class midget submarine, believed to be Midget No. 14, is raised from Sydney Harbour date=31 …
79France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… …
80international 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… …
