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uncertainty principle

(Encyclopedia)uncertainty principle, physical principle, enunciated by Werner Heisenberg in 1927, that places an absolute, theoretical limit on the combined accuracy of certain pairs of simultaneous, related measur...

Chimborazo

(Encyclopedia)Chimborazo chēmbōräˈsō [key], inactive volcano, 20,577 ft (6,272 m) high, central Ecuador; the highest in Ecuador. Its summit is always snowcapped. First explored by Alexander von Humboldt in 180...

Herrnhut

(Encyclopedia)Herrnhut hĕrnˈho͞ot [key], town, Saxony, SE Germany. It was founded (1722) by Graf von Zinzendorf as a colony of Moravian Brethren (see Moravian Church), and is today a Moravian center with archive...

Pappenheim, Gottfried Heinrich, Graf zu

(Encyclopedia)Pappenheim, Gottfried Heinrich, Graf zu gôtˈfrēt hīnˈrĭkh gräf tso͞o päˈpənhīm [key], 1594–1632, German military leader, imperial field marshal in the Thirty Years War. A convert to Roma...

Paracelsus, Philippus Aureolus

(Encyclopedia)Paracelsus, Philippus Aureolus fĭlĭpˈəs ôrēōˈləs părəsĕlˈsəs [key], 1493?–1541, Swiss physician and alchemist. His original name Theophrastus Bombastus von Hohenheim. He traveled widel...

Stein, Karl, Freiherr vom und zum

(Encyclopedia)Stein, Karl, Freiherr vom und zum kärl frīˈhĕr fəm o͝ont tso͝om shtīn [key], 1757–1831, Prussian statesman and reformer. Rising through the Prussian bureaucracy, he became minister of commer...

Coronel

(Encyclopedia)Coronel kōrōnĕlˈ [key], S central Chile, a port on the Pacific Ocean. Part of the Great C...

Carlos, prince of the Asturias

(Encyclopedia)Carlos, 1545–68, prince of the Asturias, son of Philip II of Spain and Maria of Portugal. Don Carlos, who seems to have been mentally unbalanced and subject to fits of homicidal mania, was imprisone...

Windthorst, Ludwig

(Encyclopedia)Windthorst, Ludwig lo͝otˈvĭkh vĭntˈhôrst [key], 1812–91, German political leader. As a founder and head of the Catholic Center party, he became the Reichstag's foremost opponent of Chancellor ...

Humphrey, Hubert Horatio

(Encyclopedia)Humphrey, Hubert Horatio, 1911–78, U.S. Vice President (1965–69), b. Wallace, S.Dak. After practicing pharmacy for several years, Humphrey taught political science and became involved in state pol...