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Regiomontanus

(Encyclopedia)Regiomontanus rēˌjēōmŏnˌtāˈnəs [key] [Lat.,=belonging to the royal mountain, i.e., to Königsberg], 1436–76, German astronomer and mathematician, b. Königsberg. His original name was Johan...

Denali

(Encyclopedia)Denali, formerly Mount McKinley, peak, 20,310 ft (6,190 m) high, S central Alaska, in the Alaska Range; highest point in North America. Permanent snowfields cover more than half the mountain and feed ...

Gratian, Italian legal scholar

(Encyclopedia)Gratian, fl. 1140, Italian legal scholar, founder of the science of canon law. Almost nothing is known of his life beyond the fact that he was a monk, almost certainly Camaldolite, and that he taught ...

Anderssen, Adolf

(Encyclopedia)Anderssen, Adolf (Karl Ernst Adolf Anderssen), 1818–79, German chess player, b. Breslau (now Wrocław, Poland). He graduated (1847) from Breslau Univ. and later was a mathematics professor there. An...

behavior therapy

(Encyclopedia)behavior therapy or behavior modification, in psychology, treatment of human behavioral disorders through the reinforcement of acceptable behavior and suppression of undesirable behavior. The techniqu...

Hooker, John Lee

(Encyclopedia)Hooker, John Lee, 1917–2001, American blues singer and guitarist, b. near Clarksdale, Miss. From a cotton-sharecropping family, he learned the blues from his stepfather and various visiting Delta bl...

Sylvester II

(Encyclopedia)Sylvester II, c.945–1003, pope (999–1003), a Frenchman (b. Auvergne) named Gerbert; successor of Gregory V. In his youth he studied at Muslim schools in Spain and became learned in mathematics and...

Sigurðsson, Jón

(Encyclopedia)Sigurðsson, Jón yōn sĭˈkhürᵺsōn [key], 1811–79, Icelandic statesman and historian. A student in Copenhagen from 1833, he developed an interest in Icelandic literature and history, on which ...

Buck, Linda B.

(Encyclopedia)Buck, Linda B., 1947–, American neurobiologist, b. Seattle, Wash., Ph.D. Univ. of Texas Southwestern Medical Center, 1980. Buck taught at Harvard Medi...

Wilson, Alexander

(Encyclopedia)Wilson, Alexander, 1766–1813, American ornithologist, b. Scotland. He came to the United States c.1794, taught in rural New Jersey and Pennsylvania, and became a citizen in 1804. Encouraged by Willi...