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Johnston, Mary

(Encyclopedia)Johnston, Mary, 1870–1936, American novelist, b. Buchanan, Va. Her books combine romance with history. She is chiefly remembered for To Have and to Hold (1900), a story of colonial Virginia, and its...

horse latitudes

(Encyclopedia)horse latitudes, two belts of latitude where winds are light and the weather is hot and dry. They are located mostly over the oceans, at about 30° lat. in each hemisphere, and have a north-south rang...

Lewis, Edward B.

(Encyclopedia)Lewis, Edward B., 1918–2004, American geneticist, b. Wilkes-Barre, Pa., grad. California Institute of Technology (Ph.D. 1942). After serving as a meteorologist with the U.S. Army Air Corps during Wo...

Geiger, Johannes Wilhelm

(Encyclopedia)Geiger, Johannes Wilhelm (Hans Geiger) gīˈgər [key], 1882–1945, German physicist. Geiger received a doctorate in physics at Erlangen in 1906, then went to Manchester, where he assisted British c...

Smoot, George Fitzgerald, 3d

(Encyclopedia)Smoot, George Fitzgerald, 3d smo͞ot [key], 1945–, American astrophysicist, b. Jacksonville, Fl., Ph.D. Massachusetts Institute of Technology 1970. Smoot has been a professor at the Univ. of Califor...

Christus, Petrus

(Encyclopedia)Christus or Cristus, Petrus both: pēˈtrəs krĭsˈtəs [key], fl. 1444–c.1473, Flemish painter; a follower and probably a pupil of the Van Eycks. In 1444 he became a free citizen of Bruges, where ...

Caesar, Sid

(Encyclopedia)Caesar, Sid (Isaac Sidney Caesar), 1922–2014, American comedian, one of the stars of the “golden age of live television,” b. Yonkers, N.Y. While performing in a World War II military show he met...

infrared astronomy

(Encyclopedia)infrared astronomy, study of celestial objects by means of the infrared radiation they emit, in the wavelength range from about 1 micrometer to about 1 millimeter. All objects, from trees and building...

pyranometer

(Encyclopedia)pyranometer pĭrˌənŏmˈətər [key], actinometer used to measure the total radiation incident on a surface. ...

Orbiting Astronomical Observatory

(Encyclopedia)Orbiting Astronomical Observatory (OAO), series of four orbiting observatories (see observatory, orbiting) launched between 1966 and 1972 by the National Aeronautics and Space Administration (NASA) to...