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digital radio

(Encyclopedia)digital radio, audio broadcasting in which an analog audio signal is converted into a digital signal before being transmitted; also known as digital audio broadcasting (DAB) and high-definition radio....

Georgia Institute of Technology

(Encyclopedia)Georgia Institute of Technology, in Atlanta, Ga.; coeducational; state supported; chartered 1885, opened 1888. It is a member school in the university system of Georgia. Significant among its faciliti...

Dewey, Melvil

(Encyclopedia)Dewey, Melvil, 1851–1931, American library pioneer, originator of the Dewey decimal system, b. Adams Center, N.Y., grad. Amherst (B.A., 1874; M.A., 1877). A man of originality and of enormous energy...

Volga-Baltic Waterway

(Encyclopedia)Volga-Baltic Waterway, canal and river system, c.685 mi (1,100 km) long, N European Russia. It links the Volga River and the St. Petersburg industrial area. It consists of the Moscow-Volga Canal, the ...

joule

(Encyclopedia)joule jo͞ol, joul [key], abbr. J, unit of work or energy in the mks system of units, which is based on the metric system; it is the work done or energy expended by a force of 1 newton acting through ...

Alpha Centauri

(Encyclopedia)Alpha Centauri ălˈfə sĕntôrˈē [key], brightest star in the constellation Centaurus and 3d-brightest star in the sky; also known as Rigil Kent or Rigil Kentaurus; 1992 position R.A. 14h39.1m, De...

Nature Conservancy

(Encyclopedia)Nature Conservancy, nonprofit organization established in 1951 to preserve or aid in the preservation of natural environments. It protects wilderness areas in the United States and Canada and is affil...

psychopharmacology

(Encyclopedia)psychopharmacology sīˌkōfärˌməkŏlˈəjē [key], in its broadest sense, the study of all pharmacological agents that affect mental and emotional functions. The term is usually applied more speci...

Parma Heights

(Encyclopedia)Parma Heights, city (1990 pop. 21,448), Cuyahoga co., NE Ohio, a residential suburb of Cleveland; settled 1818, set off from Parma and inc. 1912. It is surrounded on three sides by Parma, and the two ...

Cozens, Alexander

(Encyclopedia)Cozens, Alexander kŭzˈənz [key], c.1717–1786, English draftsman and writer, b. Russia. Cozens is thought to have been the first principal English master to work entirely with landscape subjects. ...