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planetarium

(Encyclopedia)planetarium, optical device used to project a representation of the heavens onto a domed ceiling; the term also designates the building that houses such a device. A modern planetarium consists of as m...

Burlington, cities, United States

(Encyclopedia)Burlington. 1 City (2020 pop. 23,982), seat of Des Moines co., SE Iowa, on four hills overlooking the Mississippi (spanned there by rail and highway ...

Buchanan, James

(Encyclopedia)Buchanan, James, 1791–1868, 15th President of the United States (1857–61), b. near Mercersburg, Pa., grad. Dickinson College, 1809. Buchanan was nominated as a Democratic candidate for the pres...

museums of science

(Encyclopedia)museums of science, institutions or buildings where collections relevant to science and technology are preserved and displayed to promote education and research. While the preponderance of these museu...

gospel music

(Encyclopedia)gospel music, American religious musical form that owes much of its origin to the Christian conversion of West Africans enslaved in the American South. Gospel music partly evolved from the songs slave...

naturalization

(Encyclopedia)naturalization, official act by which a person is made a national of a country other than his or her native one. In some countries naturalized persons do not necessarily become citizens but may merely...

Wallace, Henry Agard

(Encyclopedia)Wallace, Henry Agard, 1888–1965, vice president of the United States (1941–45), b. Adair co., Iowa; grad. Iowa State Univ. He was (1910–24) associate editor of Wallaces' Farmer, an influential a...

Yalta Conference

(Encyclopedia)Yalta Conference, meeting (Feb. 4–11, 1945), at Yalta, Crimea, USSR, of British Prime Minister Winston Churchill, U.S. President Franklin Delano Roosevelt, and Soviet Premier Joseph Stalin. Most of ...

almanac

(Encyclopedia)almanac, originally, a calendar with notations of astronomical and other data. Almanacs have been known in simple form almost since the invention of writing, for they served to record religious feasts...

convention

(Encyclopedia)convention, in U.S. politics, a gathering of delegates to nominate candidates for elective office and to formulate party policy. They are held at the national, state, and local levels. State convent...