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Ehrenfest, Paul

(Encyclopedia)Ehrenfest, Paul poul āˈrənfĕst [key], 1880–1933, Austrian physicist. In 1904, Ehrenfest received his doctorate in theoretical physics in Vienna and married the Russian mathematician Tatyana Alex...

Hahn, Otto

(Encyclopedia)Hahn, Otto ôˈtō hän [key], 1879–1968, German chemist and physicist. His important contributions in the field of radioactivity include the discovery of several radioactive substances, the develop...

Hänsch, Theodor Wolfgang

(Encyclopedia)Hänsch, Theodor Wolfgang, 1941–, German physicist, Ph.D. Heidelberg, 1969. He was a professor at Stanford from 1975 to 1986 and then became head of the Max Planck Institute for Quantum Optics, Garc...

Ziegler, Karl

(Encyclopedia)Ziegler, Karl tsēˈglər [key], 1898–1973, German chemist. Educated at the Univ. of Marburg, he taught at Heidelberg and Halle and for a short period at the Univ. of Chicago. He became director of ...

Jude, epistle of the New Testament

(Encyclopedia)Jude, epistle of the New Testament, the next to last book of the Bible. The Jude who wrote it has been identified since ancient times with St. Jude the apostle, but most modern scholars deny the ident...

Philip, Saint, one of the Twelve Apostles

(Encyclopedia)Philip, Saint, one of the Twelve Apostles. Like Peter and Andrew, he came from Bethsaida in Galilee. He is mentioned several times in the New Testament (Mat. 10.3; John 1.43–51; 6.5,7; 12.21,22; 14....

Alexander, king of Yugoslavia

(Encyclopedia)Alexander, 1888–1934, king of Yugoslavia (1921–34), son and successor of Peter I. Of the Karadjordjević family, he was educated in Russia and became crown prince of Serbia upon the renunciation (...

Pedro

(Encyclopedia)Pedro. For Spanish and Portuguese rulers thus named, use Peter.

Peekskill

(Encyclopedia)Peekskill, city (1990 pop. 19,536), Westchester co., SE N.Y., on the Hudson River; settled 1665, inc. as a village 1816, as a city 1940. Clothing, leather goods, lighting fixtures, and office equipmen...

Aragón, house of

(Encyclopedia)Aragón, house of, family that ruled in Aragón, Catalonia, Majorca, Sicily, Naples, Sardinia, Athens, and other territories in the Middle Ages. It was descended from Ramiro I of Aragón (1035–63), ...