Columbia Encyclopedia

(Encyclopedia) Mason-Dixon Line, boundary between Pennsylvania and Maryland (running between lat. 39°43′26.3″N and lat. 39°43′17.6″N), surveyed by the English team of Charles Mason, a mathematician and ast...

(Encyclopedia) Hopper, Grace, 1906–92, American computer scientist, b. New York City as Grace Brewster Murray. She was educated at Vassar College and Yale (Ph.D., 1934). After teaching at Vassar (1931–1943), she...

(Encyclopedia) fence [short for defense], humanly erected barrier between two divisions of land, used to mark a legal or other boundary, to keep animals or people in or out, and sometimes as an ornament. In newly se...

(Encyclopedia) Simnel, Lambert sĭmˈnəl [key], c.1475–1525, imposter and pretender to the English throne. Little is known of his early life, but before 1486 he caught the attention of an Oxford priest, Richard S...

(Encyclopedia) Strauss, David Friedrich däˈvēt frēˈdrĭkh shtrous [key], 1808–74, German theologian and philosopher. In Berlin he studied (1831–32) Hegelian philosophy. As tutor at Tübingen he lectured on ...

(Encyclopedia) Hohenzollern hōˌən-tsôlˈərn [key], German princely family that ruled Brandenburg (1415–1918), Prussia (1525–1918), and Germany (1871–1918). Originating in S Germany and traceable to the 11...

(Encyclopedia) Donatello dŏnətĕlˈō, Ital. dōnätĕlˈlō [key], c.1386–1466, Italian sculptor, major innovator in Renaissance art, b. Florence. His full name was Donato di Niccolò di Betto Bardi. In his for...

(Encyclopedia) Mississippi, river, principal river of the United States, c.2,350 mi (3,780 km) long, exceeded in length only by the Missouri, the chief of its numerous tributaries. The combined Missouri-Mississippi ...

(Encyclopedia) miracle, preternatural occurrence that is viewed as the expression of a divine will. Its awe and wonder lie in the fact that the cause is hidden. The idea of the miracle occurs especially with the evo...

(Encyclopedia) Owens, Jesse, 1913–80, U.S. track star, b. Alabama. He was also called John Cleveland Owens, although his original name was said to be simply J. C. Owens. After his family moved to Cleveland he exce...