(Encyclopedia) pulsar, in astronomy, a neutron star that emits brief, sharp pulses of energy instead of the steady radiation associated with other natural sources. The study of pulsars began when…
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Sextant
sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical…
(Encyclopedia) electric fish, name for various fish that produce electricity by means of organs usually developed from modified muscle tissue. The electric eels of South America are freshwater…
(Encyclopedia) gamma radiation, high-energy photons emitted as one of the three types of radiation resulting from natural radioactivity. It is the most energetic form of electromagnetic radiation,…
(Encyclopedia) mannerism, a style in art and architecture (c.1520–1600), originating in Italy as a reaction against the equilibrium of form and proportions characteristic of the High Renaissance. In…
(Encyclopedia) Kendrew, John Cowdery, 1917–97, British biochemist, grad. Cambridge (Ph.D. 1949). He was a fellow of Peterhouse College at Cambridge from 1947 to 1975 and was scientific adviser to the…
(Encyclopedia) Huber, RobertHuber, Roberth&oomacr;ˈbər [key], 1937–, German biochemist. After receiving his doctorate at Munich Technical Univ., he worked both there and at the Max Planck…
(Encyclopedia) Hevesy, Georg vonHevesy, Georg vongāˈôrkh fən hĕˈvĕshē [key], 1885–1966, Hungarian physicist and chemist. He received the 1943 Nobel Prize in Chemistry for his work on the use of…
(Encyclopedia) gaillardiagaillardiagālärˈdēə [key], any plant of the genus Gaillardia of the Asteaceae family (aster family), including annual, biennial, and perennial herbs with showy heads of red…
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