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commutator
commutator device used in an electric generator to convert the alternating current produced in the generator into direct current before the current is sent into an external circuit; it is basically a rotary switching device synchronized with the frequency of the alternating current. Commutators a...
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commutation of sentence
commutation of sentence in criminal law, reduction of a sentence for a criminal act by action of the executive head of the government. Like pardon , commutation of sentence is a matter of grace, not of right; it is distinguished from pardon, however, in that the conviction of crime is not nullifie...
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commutative law
commutative law in mathematics, law holding that for a given binary operation (combining two quantities) the order of the quantities is arbitrary; e.g., in addition, the numbers 2 and 5 can be combined as 2+5=7 or as 5+2=7. More generally, in addition, for any two numbers a and b the commutativ...
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Barrie
Barrie city (1991 pop. 62,728), S Ont., Canada, on the west shore of Lake Simcoe. It is a commuter city in the Toronto metropolitan region. Among the city's diverse manufactures are clothing, spirits, electronics, and leather goods. A large military base is nearby.
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Aranjuez
Aranjuez , town (1990 pop. 38,239), Madrid prov., central Spain, on the Tagus River. As a market for the irrigated horticulture nearby, it is known for its asparagus and strawberries. It was once a royal summer residence with elaborate gardens. The palace burned several times in the 17th cent. but w...
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Guildford
Guildford , town (1991 pop. 61,509) and district, Surrey, SE England, on the Wey River. The county seat of Surrey, Guildford is a market and residential commuter town of London. Manufactures include knitwear, plastics, and engineered goods. Sheep and cattle fairs are held in the town. The Univ. of S...
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Welwyn Garden City
Welwyn Garden City , city (1991 pop. 40,665), Hertfordshire, E central England. It is a garden city , founded by Ebenezer Howard in 1920. Its industries produce a variety of products, including radio and television sets. Most of the local population, however, commutes to work in London. The city'...
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telecommuting
telecommuting an arrangement by which people work at home using a computer and telephone, transmitting work material to a business office by means of a modem and telephone lines; it is also known as telework. Although the term "telecommuting" was coined in the early 1970s, the practice became...
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addition
addition fundamental operation of arithmetic, denoted by +. In counting, a + b represents the number of items in the union of two collections having no common members (disjoint sets), having respectively a and b members. In geometry a + b might, for example, represent the area of the union ...
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Gang of Four
Gang of Four term of opprobrium given by the Chinese Communist authorities to four persons held responsible for the excesses of the Cultural Revolution (1966-69). They were also accused of trying to seize power after the deaths (1976) of Mao Zedong and Zhou Enlai . The most notable of the Gang...
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