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Topic: Proximity fuse

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	Proximity fuse (Site not responding. Last check: 2007-11-01)
		A proximity fuse is a fuse that is designed to detonate an explosive automatically when close enough to the target to destroy it.
		By sending out radio waves that are reflected by the target and comparing the frequency of the outgoing waves to the incoming waves, a radio proximity fuse uses the Doppler effect to determine its proximity to a target.
		With a proximity fuse, all one has to worry about is getting a shell or missile on a trajectory that, at some time, will pass close by the target (that still is a significant problem).
	www.encyclopedia-1.com /p/pr/proximity_fuse.html (376 words)

	Vannevar Bush
		The NDRC and then the OSRD were originally set up to support and augment Army and Navy research, but by the end of the war the OSRD was leading military research.
		Many useful innovations resulted from OSRD research and development including improvements in radar, the proximity fuse, anti-submarine tactics, and various secret devices for the OSS (the precursor of the CIA).
		Bush was also very closely involved in the Manhattan Project which developed the first atomic bomb.
	www.ibiblio.org /pioneers/bush.html (2063 words)

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