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Great Rift Valley

(Encyclopedia)Great Rift Valley, geological fault system of SW Asia and E Africa. It extends c.3,000 mi (4,830 km) from N Syria to central Mozambique. The northernmost extension runs S through Syria and Lebanon, th...

grouse

(Encyclopedia)grouse, common name for a game bird of the colder parts of the Northern Hemisphere. There are about 18 species. Grouse are henlike terrestrial birds, protectively plumaged in shades of red, brown, and...

Kelly, Ellsworth

(Encyclopedia)Kelly, Ellsworth, 1923–2015, American painter, b. Newburgh, N.Y. He moved to New York City in 1941, studying at Pratt Institute, and later attended the Boston Museum Arts School. In Paris during the...

Koch, Kenneth

(Encyclopedia)Koch, Kenneth (Kenneth Jay Koch) kōk [key], 1925–2002, American poet, novelist, and playwright, b. Cincinnati. After studying at Harvard and Columbia he was associated with the Artist's Theatre, Lo...

neutron

(Encyclopedia)neutron, uncharged elementary particle of slightly greater mass than the proton. It was discovered by James Chadwick in 1932. The stable isotopes of all elements except hydrogen and helium contain a n...

bubble chamber

(Encyclopedia)bubble chamber, device for detecting charged particles and other radiation by means of tracks of bubbles left in a chamber filled with liquid hydrogen or other liquefied gas. It was invented in 1952 b...

Courteline, Georges

(Encyclopedia)Courteline, Georges zhôrzh ko͞orˌtəlēnˈ [key], 1858–1929, French writer. His prolific humorous and satiric works include sketches, plays, tales, and novels. Bourgeois attitudes are ridiculed i...

erysipelas

(Encyclopedia)erysipelas ĕrəsĭpˈələs [key], acute infection of the skin characterized by a sharply demarcated, shiny red swelling, accompanied by high fever and a feeling of general illness. The causative age...

apatite

(Encyclopedia)apatite ăpˈətīt [key], mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and purple. Apatite is...

Antonelli, Giacomo

(Encyclopedia)Antonelli, Giacomo jäˈkōmō äntōnĕlˈlē [key], 1806–76, Italian cardinal and statesman of the Roman Catholic Church, adviser to Pope Pius IX. He received the red hat of the cardinalate in 184...