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specific heat
(Encyclopedia) specific heat, ratio of the heat capacity of a substance to the heat capacity of a reference substance, usually water. Heat capacity is the amount of heat needed to change the…nosebleed
(Encyclopedia) nosebleed, nasal hemorrhage occurring as the result of local injury or disturbance. Most nosebleeds are not serious and occur when one of the small veins of the septum (the partition…Rugby, town, England
(Encyclopedia) Rugby, town (1991 pop. 59,039), Warwickshire, central England. An important railroad junction and engineering center, Rugby is the seat of one of England's most esteemed public schools…Rank, Otto
(Encyclopedia) Rank, OttoRank, Ottoôtˈō rängk [key], 1884–1937, Austrian psychoanalyst; one of Sigmund Freud's first and most valued pupils. He early employed Freudian techniques to clarify the…Romains, Jules
(Encyclopedia) Romains, JulesRomains, Juleszhül rômăNˈ [key], 1885–1972, French writer, whose original name was Louis Farigoule. A brilliant student of philosophy, he became known as the chief…mutation
(Encyclopedia) mutation, in biology, a sudden, random change in a gene, or unit of hereditary material, that can alter an inheritable characteristic. Most mutations are not beneficial, since any…induction, in electricity and magnetism
(Encyclopedia) induction, in electricity and magnetism, common name for three distinct phenomena. Electromagnetic induction is the production of an electromotive force (emf) in a conductor as a…James, William
(Encyclopedia) James, William, 1842–1910, American philosopher, b. New York City, M.D. Harvard, 1869; son of the Swedenborgian theologian Henry James and brother of the novelist Henry James. In 1872…magic, in religion and superstition
(Encyclopedia) magic, in religion and superstition, the practice of manipulating and controlling the course of nature by preternatural means. Magic is based upon the belief that the universe is…ultraviolet radiation
(Encyclopedia) ultraviolet radiation, invisible electromagnetic radiation between visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers and in frequency from about…Trending
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