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Oberlin College

(Encyclopedia)Oberlin College, at Oberlin, Ohio; coeducational; opened 1833 as Oberlin Collegiate Institute, became Oberlin College in 1850. It includes a college of arts and sciences and a well-known conservatory ...

levitation

(Encyclopedia)levitation lĕvĭtāˈshən [key], the raising of a human or other body in the air without mechanical aid. The idea is ancient; holy men, both pagan and Christian, were reputed to have had the power o...

Torbay

(Encyclopedia)Torbay, borough and unitary authority (1991 pop. 54,430), SW England. The borough comprises the towns of Torquay, Paignton, and Brixham. On Tor Bay is a noted tourist resort area, known as the “Engl...

pun

(Encyclopedia)pun, use of words, usually humorous, based on (a) the several meanings of one word, (b) a similarity of meaning between words that are pronounced the same, or (c) the difference in meanings between tw...

blackjack

(Encyclopedia)blackjack, one of the world's most widely played gambling card games; also known as twenty-one or vingt-et-un. Despite contesting claims between the French and Italians, its origins are unknown. Each ...

Ribot, Théodule

(Encyclopedia)Ribot, Théodule rēbōˈ [key], 1839–1916, French psychologist. He was professor of experimental psychology at the Sorbonne and later at the Collège de France. His many works include Heredity: A P...

division, in mathematics

(Encyclopedia)division, fundamental operation in arithmetic; the inverse of multiplication. Division may be indicated by the symbol ÷, as in 15 ÷ 3, or simply by a fraction, 15/3. The number that is being divided...

common-ion effect

(Encyclopedia)common-ion effect, decrease in solubility of an ionic salt, i.e., one that dissociates in solution into its ions, caused by the presence in solution of another solute that contains one of the same ion...

convection

(Encyclopedia)convection, mode of heat transfer in fluids (liquids and gases). Convection depends on the fact that, in general, fluids expand when heated and thus undergo a decrease in density (since a given volume...

hostage

(Encyclopedia)hostage, person held by another as a guarantee that certain actions or promises will or will not be carried out. During periods of internal turmoil, insurgents often seize hostages; recent examples in...