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fuel cell

(Encyclopedia)fuel cell, electric cell in which the chemical energy from the oxidation of a gas fuel is converted directly to electrical energy in a continuous process (see oxidation and reduction). The efficiency ...

windmill

(Encyclopedia)windmill, apparatus that harnesses wind power for a variety of uses, e.g., pumping water, grinding corn, driving small sawmills, and driving electrical generators. Windmills were probably not known in...

optical sensing

(Encyclopedia)optical sensing, in general, any method by which information that occurs as variations in the intensity, or some other property, of light is translated into an electric signal. This is usually accompl...

Gujrat

(Encyclopedia)Gujrat go͝ojərätˈ [key], city, NE Pakistan. It is near the Chenab River and on a major road ...

Harvey, George Brinton McClellan

(Encyclopedia)Harvey, George Brinton McClellan, 1864–1928, American journalist and diplomat, b. Peacham, Caledonia co., Vt. After a career in journalism and insurance, he became involved in the construction and a...

Linköping

(Encyclopedia)Linköping lĭnˈchöˌpĭng [key], city (1990 pop. 82,450), capital of Östergötland co., S Sweden, near Lake Roxen. It is a commercial, industrial, and transportation center. Manufactures include m...

motel

(Encyclopedia)motel, public lodging establishment for automobile travelers. Motels have traditionally differed from hotels in that the former have facilities for free parking on the premises, are seldom more than t...

Muncie

(Encyclopedia)Muncie mŭnˈsē [key], city (1990 pop. 71,035), seat of Delaware co., E Ind., on the White River; inc. 1854. It is a trade, processing, and manufacturing center. The city is in a fertile agricultural...

barge

(Encyclopedia)barge, large boat, generally flat-bottomed, used for transporting goods. Most barges on inland waterways are towed, but some river barges are self-propelled. There are also sailing barges. On the Grea...

Couzens, James

(Encyclopedia)Couzens, James kŭzˈənz [key], 1872–1936, U.S. Senator, industrialist, and philanthropist, b. Ontario, Canada. He moved (1887) to Detroit, and after he entered (1903) into partnership with Henry F...