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Alegría, Claribel

(Encyclopedia)Alegría, Claribel, 1924–2018, Nicaraguan-Salvadoran poet, b. Nicaragua as Clara Isabel Alegría Vides, grad. George Washington Univ. (B.A., 1948). Her family went into exile in El Salvador when she...

corona, in astronomy

(Encyclopedia)corona, luminous envelope surrounding the sun, outside the chromosphere. Its density is less than one billionth that of the earth's atmosphere. The corona is visible only at the time of totality durin...

Orbiting Geophysical Observatory

(Encyclopedia)Orbiting Geophysical Observatory (OGO), series of six orbiting observatories (see observatory, orbiting) launched between 1964 and 1969 by the National Aeronautics and Space Administration (NASA) to s...

Korngold, Erich Wolfgang

(Encyclopedia)Korngold, Erich Wolfgang, 1897–1957, American composer of film and concert music and opera, b. Brünn, Austria-Hungary (now Brno, Czech Republic). He began composing ballet music and operas in his t...

lasso

(Encyclopedia)lasso lăsˈō, lăso͞oˈ [key], light, strong rope, usually with a smooth, hard finish, made of a fine quality of hemp or nylon. It is used primarily for catching large animals such as cattle and ho...

Kalidasa

(Encyclopedia)Kalidasa käˌlĭdäˈsə [key], fl. 5th cent.?, Indian dramatist and poet. He is regarded as the greatest figure in classical Sanskrit literature. Except that he was retained by the Gupta court, no f...

center of mass

(Encyclopedia)center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of t...

seal, stamp

(Encyclopedia)seal, stamp made from a die or matrix of metal, a gem, or other hard substance that yields an impression on wax or other soft substance. The use of seals is very ancient, examples of great antiquity o...

scarlet fever

(Encyclopedia)scarlet fever or scarlatina, an acute, communicable infection, caused by group A hemolytic streptococcal bacteria (see streptococcus) that produce an erythrogenic toxin. The disease is now uncommon, p...

Richter, Burton

(Encyclopedia)Richter, Burton rĭkˈtər [key], 1931–2018, American physicist, b. New York City, Ph.D. Massachusetts Institute of Technology, 1956. A professor at Stanford, Richter designed and built a particle a...