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Van Halen, Eddie
(Encyclopedia)Van Halen, Eddie (Edward Lodewijk Van Halen), 1955–2020, American rock musician and song writer, b. Amsterdam, Netherlands; his family moved to California when he was young. He and brother Alex form...integrated circuit
(Encyclopedia)integrated circuit (IC), electronic circuit built on a semiconductor substrate, usually one of single-crystal silicon. The circuit, often called a chip, is packaged in a hermetically sealed case or a ...magnetic levitation
(Encyclopedia)magnetic levitation or maglev măgˈlĕv [key], support and often propulsion of objects or vehicles by the use of magnets. The magnets used in magnetic levitation suspend an object free of contact wit...parachute
(Encyclopedia)parachute, umbrellalike device designed to retard the descent of a falling body by creating drag as it passes through the air. The development of modern aircraft has led to many experiments in the aer...wave, in physics
(Encyclopedia)wave, in physics, the transfer of energy by the regular vibration, or oscillatory motion, either of some material medium or by the variation in magnitude of the field vectors of an electromagnetic fie...Ramey, Samuel
(Encyclopedia)Ramey, Samuel, 1942–, American operatic bass, b. Colby, Kans. He studied music at Kansas State and Wichita State (grad. 1968) universities and debuted with the New York City Opera in Bizet's Carmen ...squash tennis
(Encyclopedia)squash tennis, game played on a four-walled court, similar in dimensions to the court on which squash racquets is played. The two games, however, differ in equipment, rules, and play. The squash tenni...Pogodin, Nikolai
(Encyclopedia)Pogodin, Nikolai fyôˈdərəvĭch sto͞okäˈlôf [key], 1900–1962, Russian dramatist. Pogodin wrote many colorful, optimistic, and popular plays generally dealing with the theme of man's conquest ...ephemeris time
(Encyclopedia)ephemeris time (ET), astronomical time defined by the orbital motions of the earth, moon, and planets. The earth does not rotate with uniform speed, so the solar day is an imprecise unit of time. Ephe...ionization chamber
(Encyclopedia)ionization chamber, device for the detection and measurement of ionizing radiation. It consists basically of a sealed chamber containing a gas and two electrodes between which a voltage is maintained ...Browse by Subject
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