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Dirac, Paul Adrien Maurice

(Encyclopedia)Dirac, Paul Adrien Maurice dĭrăkˈ [key], 1902–84, English physicist. He was educated at the Univ. of Bristol and St. John's College, Cambridge, and became professor of mathematics at Cambridge in...

Clarke, Arthur C.

(Encyclopedia)Clarke, Arthur C. (Sir Arthur Charles Clarke), 1917–2008, British science fiction writer. During World War II he served as a radar instructor and aviator in the Royal Air Force. After the war he obt...

cognitive psychology

(Encyclopedia)cognitive psychology, school of psychology that examines internal mental processes such as problem solving, memory, and language. It had its foundations in the Gestalt psychology of Max Wertheimer, Wo...

chamber music

(Encyclopedia)chamber music, ensemble music for small groups of instruments, with only one player to each part. Its essence is individual treatment of parts and the exclusion of virtuosic elements. Originally playe...

executive

(Encyclopedia)executive, one who carries out the will or plan of another person or of a group. In government, the term refers not only to the chief administrative officer but to all others who execute the laws and ...

fractal geometry

(Encyclopedia)fractal geometry, branch of mathematics concerned with irregular patterns made of parts that are in some way similar to the whole, e.g., twigs and tree branches, a property called self-similarity or s...

Hill, Daniel Harvey

(Encyclopedia)Hill, Daniel Harvey, 1821–89, Confederate general in the American Civil War, b. York District, S.C. He served in the Mexican War but resigned from the army in 1849. He was professor of mathematics a...

Hammerstein, Oscar, 2d

(Encyclopedia)Hammerstein, Oscar, 2d, 1895–1960, American lyricist and librettist, b. New York City, grad. Columbia, 1916; grandson of Oscar Hammerstein. His first success was Wildflower (1923), with music by Vin...

Galatians

(Encyclopedia)Galatians gəlāˈshənz [key], letter of the New Testament. It is ascribed to St. Paul and addressed to ethnic Gauls living in central Asia Minor, or to inhabitants of the Roman province of Galatia i...

Joseph, Nez Percé chief

(Encyclopedia)Joseph (Chief Joseph), c.1840–1904, chief of a group of Nez Percé. On his father's death in 1871, Joseph became leader of one of the groups that refused to leave the land ceded to the United States...