Columbia Encyclopedia

Search results

458 results found

audiovisual education

(Encyclopedia)audiovisual education, educational instruction by means of materials that use the senses of sight and hearing to stimulate and enrich learning experiences. The successful use of motion pictures and ot...

Lagos, city, Nigeria

(Encyclopedia)Lagos lāˈgŏs, läˈgôs [key], city (1991 est. pop. 1,274,000), SW Nigeria, on the Gulf of Guinea. It comprises the island of Lagos and three former neighboring islands (now connected by landfill t...

Salazar, António de Oliveira

(Encyclopedia)Salazar, António de Oliveira əntôˈnyo͝o ᵺĭ o͝olēvāˈrə sələzärˈ [key], 1889–1970, Portuguese statesman and dictator. After studying at the Univ. of Coimbra, he became professor of po...

Chautauqua movement

(Encyclopedia)Chautauqua movement, development in adult education somewhat similar to the lyceum movement. It derived from an institution at Chautauqua, N.Y. There, in 1873, John Heyl Vincent and Lewis Miller propo...

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...

clown

(Encyclopedia)clown, a comic character usually distinguished by garish makeup and costume whose antics are both humorously clumsy and acrobatic. The clown employs a broad, physical style of humor that is wordless o...

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...

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...

Huston, John

(Encyclopedia)Huston, John hyo͞osˈtən [key], 1906–87, American motion picture director, writer, and actor, b. Nevada, Mo. In many of his films, such as The Treasure of the Sierra Madre (1948) and Moby Dick (19...

electric fish

(Encyclopedia)electric fish, name for various fish that produce electricity by means of organs usually developed from modified muscle tissue. The electric eels of South America are freshwater knifefish unrelated to...