fault clearance time
51Electrical wiring — in general refers to insulated conductors used to carry electricity, and associated devices. This article describes general aspects of electrical wiring as used to provide power in buildings and structures, commonly referred to as building wiring …
52Alan Turing — Turing redirects here. For other uses, see Turing (disambiguation). Alan Turing Turing at the time of his election to Fellowship of the Royal Society …
53Clifton Suspension Bridge — Clifton suspension bridge. Carries Cars, pedestrians and cycles Crosses River Avon …
54Hillary Rodham Clinton — 67th United …
55List of unmade Doctor Who serials and films — During the long history of the British science fiction television programme Doctor Who, a number of stories were proposed but, for a variety of reasons, never fully produced. Below is a list of unmade serials which the BBC had intended to produce …
56Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… …
57United Nations — 1. an international organization, with headquarters in New York City, formed to promote international peace, security, and cooperation under the terms of the charter signed by 51 founding countries in San Francisco in 1945. Abbr.: UN Cf. General… …
58Joseph McCarthy — Infobox Senator |name=Joseph Raymond McCarthy nationality=American |300px jr/sr=United States Senator state=Wisconsin party=Republican term start=January 3, 1947 term end=May 2, 1957 preceded=Robert M. La Follette, Jr. succeeded=William Proxmire… …
59Mini — For the Mini marque, see Mini (marque). For other uses of Mini , see Mini (disambiguation). Mini Manufacturer BMC to MG Rover, and Innocenti …
60Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
