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Bartlesville

(Encyclopedia) Bartlesville Bartlesville bärˈtəlzvĭl [key], city (2020 pop. 37,290), seat of Washington co., NE Okla…

Evatt, Herbert Vere

(Encyclopedia) Evatt, Herbert VereEvatt, Herbert Verevĭr ĕvˈət [key], 1894–1965, Australian statesman. He became (1940) a Labor member of the House of Representatives, before being appointed (1941)…

Norrish, Ronald George Wreyford

(Encyclopedia) Norrish, Ronald George Wreyford, 1897–1978, British chemist, Ph.D. Cambridge, 1925. He joined the faculty at Cambridge in 1925 and was a professor there until he retired in 1965.…

Cromwell, Richard

(Encyclopedia) Cromwell, Richard, 1626–1712, lord protector of England; third son of Oliver Cromwell. He was the eldest surviving son at the death of his father (Sept. 3, 1658), who had nominated him…

Cherenkov, Pavel Alekseyevich

(Encyclopedia) Cherenkov, Pavel AlekseyevichCherenkov, Pavel Alekseyevichpäˈvĭl əlyĭksyāˈyəvĭch chərĕngˈkəf [key], 1904–90, Soviet physicist. He shared with the Soviet physicists I. M. Frank and I. Y…

amplitude

(Encyclopedia) amplitudeamplitudeămˈplĭt&oomacr;dˌ [key], in physics, maximum displacement from a zero value or rest position. In the harmonic motion of a pendulum, the amplitude of the swing is…

Blackett, Patrick Maynard Stuart

(Encyclopedia) Blackett, Patrick Maynard StuartBlackett, Patrick Maynard Stuartblăkˈĭt [key], 1897–1974, English physicist. He was professor of physics at the Univ. of Manchester (1937–53) and in…

biosphere

(Encyclopedia) biosphere, irregularly shaped envelope of the earth's air, water, and land encompassing the heights and depths at which living things exist. The biosphere is a closed and self-…

nuclear reactor

(Encyclopedia) CE5 Power reactor system nuclear reactor, device for producing controlled release of nuclear energy. Reactors can be used for research or for power production. A research reactor…

physics

(Encyclopedia) physics, branch of science traditionally defined as the study of matter, energy, and the relation between them; it was called natural philosophy until the late 19th cent. and is still…