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Cormack, Allan MacLeod

(Encyclopedia)Cormack, Allan MacLeod məkloudˈ, côrˈmək [key], 1924–98, American physicist, b. Johannesburg, South Africa. After studying at the Univ. of Cape Town (B.S. physics, 1944, M.S. crystallography, 1...

Darwin, Charles Galton

(Encyclopedia)Darwin, Charles Galton, 1887–1962, English physicist and administrator. Educated at Cambridge, he worked under Ernest Rutherford at Manchester, where he collaborated with H. G. J. Moseley in fundame...

Bigfoot

(Encyclopedia)Bigfoot or Sasquatch, large apelike creature reportedly sighted hundreds of times in the United States and Canada (most often in the Pacific Northwest) since the mid-19th cent. Similar to Asia's abomi...

radiation

(Encyclopedia)radiation rāˌdēāˈshən [key], term applied to the emission and transmission of energy through space or through a material medium and also to the radiated energy itself. In its widest sense the te...

Zworykin, Vladimir Kosma

(Encyclopedia)Zworykin, Vladimir Kosma zwôˈrĭkĭn [key], 1889–1982, American physicist, b. Russia, educated in Russia, at the Collège de France, and at the Univ. of Pittsburgh (Ph.D., 1926). He became an Amer...

Avogadro's number

(Encyclopedia)Avogadro's number ävōgäˈdrō [key] [for Amedeo Avogadro], number of particles contained in one mole of any substance; it is equal to 602,252,000,000,000,000,000,000, or in scientific notation, 6.0...

Kajita, Takaaki

(Encyclopedia)Kajita, Takaaki 1959–, Japanese physicist, Ph.D. Univ. of Tokyo, 1986. In 1988 he joined the faculty at the Univ. of Tokyo, where he is now professor and director of the Institute for Cosmic Ray Res...

spinal puncture

(Encyclopedia)spinal puncture, surgical penetration of the spinal canal by a hollow needle introduced between two of the lumbar vertebrae. The arrangement permits injection of antibiotics or anesthetics (see anesth...

Candela, Felix

(Encyclopedia)Candela, Felix (Félix Candela Outeriño) fāˈlēks kändāˈlä [key], 1910–97, Mexican-American architect, b. Madrid. Candela studied in Madrid but was forced to flee Spain after his participatio...

observatory

(Encyclopedia)observatory, scientific facility especially equipped to detect and record naturally occurring scientific phenomena. Although geological and meteorological observatories exist, the term is generally ap...