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Bird, Robert Montgomery

(Encyclopedia)Bird, Robert Montgomery, 1806–54, American playwright and novelist, b. New Castle, Del., M.D. Univ. of Pennsylvania, 1827. He wrote several prizewinning verse plays for the actor Edwin Forrest, nota...

Boehm, Martin

(Encyclopedia)Boehm, Martin bām [key], 1725–1812, American evangelical preacher, b. Conestoga, Pa. He was the son of a Palatinate Mennonite who settled in Lancaster co., Pa. Boehm became a Mennonite preacher c.1...

Zewail, Ahmed Hassan

(Encyclopedia)Zewail, Ahmed Hassan, 1946–2016, Egyptian-American chemist, b. Damanhur, Egypt, Ph.D. Univ. of Pennsylvania, 1974. He became a U.S. citizen in 1982. A professor at the California Institute of Techno...

Schrieffer, John Robert

(Encyclopedia)Schrieffer, John Robert, 1931–2019, American physicist, b., Oak Park, Ill., Ph.D. Univ. of Illinois, 1957. Schrieffer was a professor at the Univ. of Chicago (1957–60), the Univ. of Illinois (1960...

Ridge, Tom

(Encyclopedia)Ridge, Tom (Thomas Joseph Ridge), 1945–, U.S. politician and government official, first secretary of Homeland Security (2003–5), b. Munhall, Pa. A graduate of Harvard (1967) and the Dickinson Scho...

Carboniferous period

(Encyclopedia)Carboniferous period kärbənĭfˈərəs [key], fifth period of the Paleozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), from 350 to 290 million years ago. The pl...

Corvallis

(Encyclopedia)Corvallis kôrvălˈĭs [key], city (2020 pop. 59,730), seat of Benton co., NW Oreg., on the ...

Goiás

(Encyclopedia)Goiás goi-äsˈ [key], state, 211,941 sq mi (548,927 sq km), central Brazil. Goiânia is the capital. The ...

Fock, Jenő

(Encyclopedia)Fock, Jenő yĕˈnö fōk [key], 1916–2001, Hungarian Communist politician. He joined the Communist party in 1932, and from 1940 to 1943 he was imprisoned for his Communist activities. An economist,...

Walter of Henley

(Encyclopedia)Walter of Henley or Walter de Henley, fl. 13th cent., English writer on agriculture. His treatise Husbandry, written in Norman French in the mid-13th cent., was the great medieval authority in England...