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cloud chamber

(Encyclopedia)cloud chamber, device used to detect elementary particles and other ionizing radiation. A cloud chamber consists essentially of a closed container filled with a supersaturated vapor, e.g., water in ai...

Jupiter, in astronomy

(Encyclopedia)Jupiter jo͞oˈpətər [key], in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomers have discovered 79 satellites orbiting Jupiter, but five of those, small sate...

radiological weapon

(Encyclopedia)radiological weapon: see radiation weapon. ...

black light

(Encyclopedia)black light: see ultraviolet radiation. ...

Hess, Victor Francis

(Encyclopedia)Hess, Victor Francis, 1883–1964, American physicist, b. Austria, Ph.D. Univ. of Graz, 1906. After teaching at the universities of Graz and Innsbruck, he came to the United States in 1938 and was lat...

fluoroscope

(Encyclopedia)fluoroscope flo͝orˈəskōp [key], instrument consisting of an X-ray machine (see X ray) and a fluorescent screen that may be used by physicians to view the internal organs of the body. During medica...

Frank, Ilya Mikhailovich

(Encyclopedia)Frank, Ilya Mikhailovich, 1908–90, Soviet physicist, Ph.D. Moscow State Univ., 1935. He was a professor at Moscow State Univ. from 1944 until his death in 1990. Mikhailovich and Igor Y. Tamm won the...

Athlone, Godart van Ginkel, 1st earl of

(Encyclopedia)Athlone, Godart van Ginkel, 1st earl of: see Ginkel, Godart van. ...

Mieris

(Encyclopedia)Mieris mēˈrĭs [key], family of Dutch genre and portrait painters of Leiden. Frans van Mieris, 1635–81, the most important, was the son of a goldsmith and pupil of Gerard Dou. His tiny, meticulous...

vaudeville

(Encyclopedia)vaudeville vôdˈvĭl [key], originally a light song, derived from the drinking and love songs formerly attributed to Olivier Basselin and called Vau, or Vaux, de Vire. Similar to the English music ha...