WATT

is the practical electric unit of power. It equals 107C.G.S. electromagnetic units of power, and is the power conveyed when a current of one ampere pa es through a conductor whose ends differ in potential by 1 volt, or when an ampere flows through a resistance of 1 ohm. Watts are measured as the numerical product of amperes and volts. Watts =eXc=c2XR =E2—2z.746 watts = 1 horse-power. An instrument to measure watts (Wattmeter) must partake of the nature of both an AmmeEtrrR and a VourMETER. It consists of a pre ure coil of thin wire placed acro the mains or feeds, and a coil of thick wire for measuring the current strength placed in series with the lamps or other apparatus using up the electrical energy. engineer; originator of steam-engine; Greenock; s. of a merchant; ed. at -p. schools; app. mathematical in public strument maker to Glasgow Univ.; acted as civil engineer, making surveys for the harbors of Ayr, Port-Glasgow, Greenock, for deepening the Forth and Clyde Canal, and for the Caledonian and ~ Canal. W. invented a letter-copying pre , air-pump, condenser, steam jacket for cylinders, double-acting engine, sun planet motion, expansion principle and of doubie engine, paralle l motion, smokele furnace, and steam engine govern in to partnership with Matth ew ors; went Boulton, 1774, and carried on a succe i Le rie a 5 yy ful busine at the Soho Iron Works, Birmingham, retiring in 1800. See Fr. painter; went to Paris, where he endured some hardships; was employed with Audran, the decorator of the Luxembourg, and in 1711 entered the Academy as a student. He became famous for his landscapes, mostly of small size, charming in color and graceful in design. A large collection of his pictures made by Frederick the Great is now in po e ion of the Ger. Emperor. an American journalist, b. in Washington, D. C. After a private education he went to New York, at the age of eighteen and began newspaper work. During the Civil War he served in the Confederate Army, though on account of defective vision he saw no active service. After the war he was on @ paper in Cincinnati for a while, then, in 1865 went to Nashville, where he founded the Republican Banner, which soon became the leading journal of the city. Later he was editor of the Louisville Journal which, under its later name of Courier-Journal, became the most influental daily in the South. village, Nord, France; scene of defeat of French by Austrians, 1793.