(Encyclopedia) California Institute of Technology, at Pasadena, Calif.; originally for men, became coeducational in 1970; founded 1891 as Throop Polytechnic Institute; called Throop College of…
(Encyclopedia) Crab Nebula, diffuse gaseous nebula in the constellation Taurus; cataloged as NGC 1952 and M1, the first object recorded in Charles Messier's catalog of nonstellar objects (see Messier…
(Encyclopedia) Richter, HansRichter, Hanshäns [key]Richter, Hans rĭkhˈtər [key], 1888–1976, American artist, b. Germany. A painter and filmmaker, Richter was influenced by cubism and Dada and was a…
(Encyclopedia) Lipscomb, William Nunn, Jr.Lipscomb, William Nunn, Jr.lĭpˈskəm [key], 1919–2011, American physical chemist, b. Cleveland, Ph.D. California Institute of Technology, 1946. A professor of…
(Encyclopedia) pentimentopentimentopĕnˌtəmĕnˈtō [key], painter's term for the evidence in a work that the original composition has been changed. Often the opaque pigment with which the artist covered…
(Encyclopedia) elasmobranchelasmobranchĭlăsˈməbrăngk [key], cartilaginous fish, member of the subclass Elasmobranchii of the vertebrate class Chondrichthyes (see Chordata). This group includes sharks…
(Encyclopedia) Gasser, Herbert SpencerGasser, Herbert Spencergăsˈər [key], 1888–1963, American physiologist, b. Platteville, Wis., grad. Univ. of Wisconsin (B.A., 1910; M.A., 1911), M.D. Johns…
The Heart of the Race Problem Negro Suffrage in a Democracy by Ray Stannard Baker In this paper I endeavor to lay down the fundamental principles which should govern the Negro…
(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…
(Encyclopedia)
CE5
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…
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