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Avogadro's number

(Encyclopedia) Avogadro's numberAvogadro's numberävōgäˈdrō [key] [for Amedeo Avogadro], number of particles contained in one mole of any substance; it is equal to 602,252,000,000,000,000,000,000, or…

observatory

(Encyclopedia) observatory, scientific facility especially equipped to detect and record naturally occurring scientific phenomena. Although geological and meteorological observatories exist, the term…

Hagler, Marvelous Marvin

(Encyclopedia) Hagler, Marvelous Marvin (Marvin Nathaniel Hagler), 1954-2021, African American champion middle-weight boxer, b. Newark, N.J. Raised…

Klug, Sir Aaron

(Encyclopedia) Klug, Sir AaronKlug, Sir Aaronkl&oomacr;g [key], 1926–2018, British biochemist, b. Lithuania. Raised and educated in South Africa, he moved to England and completed his doctorate…

Lansing

(Encyclopedia) Lansing. 1 Village (1990 pop. 28,086), Cook co., NE Ill., a suburb of Chicago, near the Ind. line; inc. 1893. Among the city's industries are meatpacking, food processing, and the…

oscilloscope

(Encyclopedia) oscilloscopeoscilloscopeəsĭlˈəskōpˌ [key], electronic device used to produce visual displays corresponding to electrical signals. Displays of such nonelectrical phenomena as the…

King, Martin Luther, Jr.

(Encyclopedia) King, Martin Luther, Jr., 1929–68, American clergyman and civil-rights leader, b. Atlanta, Ga., grad. Morehouse College (B.A., 1948), Crozer Theological Seminary (B.D., 1951), Boston…

aster

(Encyclopedia) CE5 Cross section of a sunflower, a member of the aster family aster [Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants…