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water power

(Encyclopedia)water power, mechanical energy derived from falling or flowing water, e.g., rivers, streams, and the overflow of dams. The wooden water wheel, long utilized for driving machinery in flour mills and fa...

Blackett, Patrick Maynard Stuart

(Encyclopedia)Blackett, Patrick Maynard Stuart blăkˈĭt [key], 1897–1974, English physicist. He was professor of physics at the Univ. of Manchester (1937–53) and in 1953 became professor at the Univ. of Londo...

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-regulating system (see e...

Stoltenberg, Jens

(Encyclopedia)Stoltenberg, Jens yĕns stōlˈtĕnbĕrk [key], 1959–, Norwegian political leader, b. Oslo. An economist, he graduated (1987) from the Univ. of Oslo and taught (1989–90) there. A member of the Lab...

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 as his succes...

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. Norrish was awarded...

Bartlesville

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

Evatt, Herbert Vere

(Encyclopedia)Evatt, Herbert Vere vĭr ĕvˈət [key], 1894–1965, Australian statesman. He became (1940) a Labor member of the House of Representatives, before being appointed (1941) attorney general and then min...

Sprague, Frank Julian

(Encyclopedia)Sprague, Frank Julian sprāg [key], 1857–1934, American electrical engineer, b. Milford, Conn., grad. Annapolis, 1878. He was an assistant to Thomas Edison in 1883 and independently created a superi...

Cherenkov, Pavel Alekseyevich

(Encyclopedia)Cherenkov, Pavel Alekseyevich päˈvĭl əlyĭksyāˈyəvĭch chərĕngˈkəf [key], 1904–90, Soviet physicist. He shared with the Soviet physicists I. M. Frank and I. Y. Tamm the 1958 Nobel Prize i...