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clavichord
(Encyclopedia) CE5 Clavichord clavichord klăvˈĭkôrd [key], keyboard musical instrument invented in the Middle Ages. It consists of a small rectangular wooden box, placed upon a table or on legs, containing a...centripetal force and centrifugal force
(Encyclopedia) CE5 Centripetal and centrifugal forces: When a ball is swung in a circle at the end of a string, centripetal and centrifugal forces act as shown above. centripetal force and centrifugal force, act...Barbirolli, Sir John
(Encyclopedia)Barbirolli, Sir John bärˌbərōˈlē [key], 1899–1970, English conductor and cellist, b. London. After being cellist (1920–24) in the International String Quartet, he organized the Barbirolli St...electrocardiography
(Encyclopedia)electrocardiography ĭlĕkˌtrōkärdēŏgˈrəfē [key], science of recording and interpreting the electrical activity that precedes and is a measure of the action of heart muscles. Since 1887, when ...harp
(Encyclopedia) CE5 Harp harp, stringed musical instrument of ancient origin, the strings of which are plucked with the fingers. Harps were found in paintings from the 13th cent. b.c. at Thebes. In different form...superconductivity
(Encyclopedia)superconductivity, abnormally high electrical conductivity of certain substances. The phenomenon was discovered in 1911 by Heike Kamerlingh Onnes, who found that the resistance of mercury dropped sudd...Tippett, Sir Michael
(Encyclopedia)Tippett, Sir Michael, 1905–98, English composer, b. London. Tippett studied at the Royal College of Music. During World War II he was briefly imprisoned as a conscientious objector. His strongly hel...Crawford, Ruth
(Encyclopedia)Crawford, Ruth, 1901–53, American composer, b. East Liverpool, Ohio. Crawford attended music schools in Jacksonville, Fla., and Chicago. Her most frequently performed composition is a string quartet...communication theory
(Encyclopedia)communication theory: see information theory. ...chaos theory
(Encyclopedia)chaos theory, in mathematics, physics, and other fields, a set of ideas that attempts to reveal structure in aperiodic, unpredictable dynamic systems such as cloud formation or the fluctuation of biol...Browse by Subject
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