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Carneades
(Encyclopedia)Carneades kärnēˈədēz [key], 213–129 b.c., Greek philosopher, b. Cyrene. He studied at Athens under Diogenes the Stoic, but reacted against Stoicism and joined the Academy, where he taught a ske...ethanol
(Encyclopedia)ethanol ĕthˈənōlˌ [key] or ethyl alcohol, CH3CH2OH, a colorless liquid with characteristic odor and taste; commonly called grain alcohol or simply alcohol. Ethanol is used extensively as a solv...Kieft, Willem
(Encyclopedia)Kieft, Willem vĭlˈəm kēft [key], 1597–1647, Dutch director-general of New Netherland. Arriving in New Amsterdam in 1638 to succeed Wouter Van Twiller, Kieft immediately assumed absolute control....Brodie, Bernard
(Encyclopedia)Brodie, Bernard, 1910–78, American military strategist, b. Chicago. Brodie edited The Absolute Weapon (1946), the first book on nuclear strategy, and was a strategic theorist at the Rand Corporation...idealism
(Encyclopedia)idealism, the attitude that places special value on ideas and ideals as products of the mind, in comparison with the world as perceived through the senses. In art idealism is the tendency to represent...autogiro
(Encyclopedia)autogiro jīˈrəplān [key], type of aircraft supported in the air by a horizontally mounted airfoil similar to that of a helicopter but unpowered. Invented by the Spaniard Juan de la Cierva, it was ...Eco, Umberto
(Encyclopedia)Eco, Umberto əmbĕrˈtō ĕcō [key], 1932–2016, Italian novelist, essayist, and semiotics scholar. His first novel, the best-selling Il nome della rosa (1980; tr. The Name of the Rose, 1983, film ...ellipse
(Encyclopedia) CE5 Ellipse ellipse, closed plane curve consisting of all points for which the sum of the distances between a point on the curve and two fixed points (foci) is the same. It is the conic section fo...switch
(Encyclopedia)switch, electrical device having two states: on, or closed; and off, or open. Ideally a switch offers a zero impedance to a current when it is closed, and it offers infinite impedance when open. Mecha...electron
(Encyclopedia)electron, elementary particle carrying a unit charge of negative electricity. Ordinary electric current is the flow of electrons through a wire conductor (see electricity). The electron is one of the ...Browse by Subject
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