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stellar evolution

(Encyclopedia)CE5 The above Hertzsprung-Russell (H-R) diagram shows the track of stellar evolution for a typical star. After spending much of its life evolving toward or along the main sequence, the star becomes...

Pauling, Linus Carl

(Encyclopedia)Pauling, Linus Carl pôˈlĭng [key], 1901–94, American chemist, b. Portland, Oreg. He was one of the few recipients of two Nobel Prizes, winning the chemistry award in 1954 and the peace prize in 1...

Aga Khan

(Encyclopedia)Aga Khan äˈgä khän [key], the title of the religious leader and imam of the Ismaili Nizari sect of Islam, originally bestowed by the Persian shah Fath Ali on Hasan Ali Shah, 1800–1881, the 46th ...

Lafontaine, Oskar

(Encyclopedia)Lafontaine, Oskar, 1943–, German politician. He rose through the Social Democrat Party (SPD) and electoral ranks in the Saar, becoming SPD regional chairman in 1977 and premier of the Saar in 1985. ...

magnetic resonance imaging

(Encyclopedia)magnetic resonance imaging (MRI), noninvasive diagnostic technique that uses nuclear magnetic resonance to produce cross-sectional images of organs and other internal body structures. The patient lies...

Hosokawa, Morihiro

(Encyclopedia)Hosokawa, Morihiro mōˌrēhēˈrō hōˌsōkäˈwä [key], 1938–, Japanese politician, a member of a noble family and grandson of Fumimaro Konoye. A journalist and member of the Liberal Democratic ...

destroyer

(Encyclopedia)destroyer, class of warship very fast relative to its length, generally equipped with torpedos, antisubmarine equipment, and medium-caliber and antiaircraft guns. The newest destroyers are equipped wi...

Cronin, James Watson

(Encyclopedia)Cronin, James Watson, 1931–2016, American nuclear physicist, b. Chicago, Ph.D. Univ. of Chicago, 1955. Cronin and co-researcher Val Logsdon Fitch were awarded the 1980 Nobel Prize in Physics for a 1...

cruiser

(Encyclopedia)cruiser, large, fast, moderately armed warship, intermediate in type between the aircraft carrier and the destroyer. During World War II, battle cruisers operated as small battleships, combining in on...

Essex, county, England

(Encyclopedia)Essex, county, 1,520 sq mi (3,938 sq km) SE England, on the Thames River and the North Sea, one of the “Home Counties” of London. Chelmsford is the ...