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Venus, in astronomy
(Encyclopedia)Venus, in astronomy, 2d planet from the sun; it is often called the evening star or morning star and is brighter than any object in the sky except the sun and the moon. Because its orbit lies between ...tropics
(Encyclopedia)tropics, also called tropical zone or torrid zone, all the land and water of the earth situated between the Tropic of Cancer at lat. 231⁄2°N and the Tropic of Capricorn at lat. 231⁄2°S. Every po...skin
(Encyclopedia) CE5 Cross section of skin skin, the flexible tissue (integument) enclosing the body of vertebrate animals. In humans and other mammals, the skin operates a complex organ of numerous structures (so...Anthropocene
(Encyclopedia)Anthropocene Epoch, an unofficial term used by scientists to describe a period of time—up to the present—in which humanity has impacted the planet on a global scale. The phrase was fir...intelligence
(Encyclopedia)intelligence, in psychology, the general mental ability involved in calculating, reasoning, perceiving relationships and analogies, learning quickly, storing and retrieving information, using language...ammeter
(Encyclopedia)ammeter ămˈmēˌtər [key], instrument used to measure the magnitude of an electric current of several amperes or more. An ammeter is usually combined with a voltmeter and an ohmmeter in a multipurp...Wilson, Kenneth Geddes
(Encyclopedia)Wilson, Kenneth Geddes, 1936–2013, American physicist, b. Waltham, Mass., Ph.D. California Institute of Technology, 1961. A professor at Cornell (1963–88) and Ohio State Univ. (1988–2008), Wilso...Frasch process
(Encyclopedia)Frasch process fräsh [key] [for Herman Frasch, the German-American chemist who devised it], process for the extraction of sulfur from subsurface deposits. Three pipes, one inside another, are sunk to...candle, unit of luminous intensity
(Encyclopedia)candle, in weights and measures, unit of luminous intensity; it is defined as 1⁄60 of the intensity of a blackbody, or ideal radiator, at the temperature at which platinum solidifies (2,046K). The...Richardson, Sir Owen Willans
(Encyclopedia)Richardson, Sir Owen Willans, 1879–1959, British physicist, Ph.D. University College, London, 1904. He was a professor at Princeton from 1906 to 1913 and at King's College London from 1914 until his...Browse by Subject
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