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Panofsky, Erwin
(Encyclopedia)Panofsky, Erwin pănŏfˈskē [key], 1892–1968, American art historian, b. Germany, Ph.D. Univ. of Freiburg, 1914. After teaching (1921–33) at the Univ. of Hamburg and serving as professor of fine...Van Allen, James Alfred
(Encyclopedia)Van Allen, James Alfred, 1914–2006, American physicist and space scientist, Mt. Pleasant, Iowa. A graduate (Ph.D 1939) of and professor of physics (1951–85) at what is now the Univ. of Iowa, where...thermometer
(Encyclopedia)thermometer, instrument for measuring temperature. Galileo and Sanctorius devised thermometers consisting essentially of a bulb with a tubular projection, the open end of which was immersed in a liqui...Padua
(Encyclopedia)Padua pădˈyo͞oə [key], Ital. Padova, city (1991 pop. 215,137), capital of Padova prov., in Venetia, NE Italy, connected by canal with the Brenta, Adige, and Po rivers. It is an agricultural, comme...Renaissance
(Encyclopedia)Renaissance rĕnəsänsˈ, –zänsˈ [key] [Fr.,=rebirth], term used to describe the development of Western civilization that marked the transition from medieval to modern times. This article is conc...vacuum
(Encyclopedia)vacuum, theoretically, space without matter in it. A perfect vacuum has never been obtained; the best human-generated vacuums contain less than 100,000 gas molecules per cc, compared to about 30 billi...Bruno, Giordano
(Encyclopedia)Bruno, Giordano jōrdäˈnō bro͞oˈnō [key], 1548–1600, Italian philosopher, b. Nola. The son of a professional soldier, he entered the Dominican order early in his youth and was ordained a pries...navigation satellite
(Encyclopedia)navigation satellite, artificial satellite designed expressly to aid the navigation of sea and air traffic. Early navigation satellites, from the Transit series launched in 1960 to the U.S. navy's Nav...mechanics
(Encyclopedia)mechanics, branch of physics concerned with motion and the forces that tend to cause it; it includes study of the mechanical properties of matter, such as density, elasticity, and viscosity. Mechanics...astrology
(Encyclopedia)astrology, form of divination based on the theory that the movements of the celestial bodies—the stars, the planets, the sun, and the moon—influence human affairs and determine the course of event...Browse by Subject
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