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particle detector
(Encyclopedia) CE5 Particle detector—Bubble chamber: A. Pressure drops as piston is raised; B. Charged particles passing through chamber ionize atoms in liquid; C. Bubbles form around atoms and form visible tra...Allen, Gracie
(Encyclopedia)Allen, Gracie: see Burns, George. ...Ithaca, city, United States
(Encyclopedia)Ithaca ĭthˈəkə [key], city (2020 pop. 32,108), seat of Tompkins co., S central N.Y., at t...Coblentz, William Weber
(Encyclopedia)Coblentz, William Weber kōˈblĕnts [key], 1873–1962, American physicist, b. North Lima, Ohio, grad. Case School of Applied Science (B.S., 1900) and Cornell (Ph.D., 1903). From 1905 to 1945 he was ...Crab Nebula
(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 catalog). It is...Van
(Encyclopedia)Van vän [key], city (1990 pop. 153,525), capital of Van prov., E Turkey, near the eastern shore of Lake Van, at an altitude of 5,659 ft (1,725 m). It is the trade center for a fruit- and grain-growin...alpha particle
(Encyclopedia)alpha particle, one of the three types of radiation resulting from natural radioactivity. Alpha radiation (or alpha rays) was distinguished and named by E. R. Rutherford in 1909, who found by measurin...Arnold, Benedict
(Encyclopedia)Arnold, Benedict, 1741–1801, American Revolutionary general and traitor, b. Norwich, Conn. As a youth he served for a time in the colonial militia in the French and Indian Wars. He later became a pr...scintillation counter
(Encyclopedia)scintillation counter, device for detecting and measuring radiation by means of tiny visible flashes produced by the radiation when it strikes a sensitive substance known as a phosphor (see phosphores...Van Rensselaer, Kiliaen
(Encyclopedia)Van Rensselaer, Kiliaen kēˈlēän văn rĕnˈsələr, rĕnˈsəlērˌ [key], c.1580–1644, Dutch merchant and patroon, b. Amsterdam. He was a wealthy diamond and pearl merchant and helped found (16...Browse by Subject
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