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Rockefeller Center

(Encyclopedia) Rockefeller Center, complex of buildings in central Manhattan, New York City, between 48th and 51st streets and Fifth Ave. and the Ave. of the Americas (Sixth Ave.). The project was…

Friedan, Betty Naomi

(Encyclopedia) Friedan, Betty NaomiFriedan, Betty Naomifrēdănˈ [key], 1921–2006, American social reformer and feminist, b. Peoria, Ill. as Bettye Goldstein, educated at Smith College (B.A., 1942) and…

atrium

(Encyclopedia) atriumatriumāˈtrēəm [key], term for an interior court in Roman domestic architecture and also for a type of entrance court in early Christian churches. The Roman atrium was an unroofed…

Epimetheus, in astronomy

(Encyclopedia) Epimetheus, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XI (or S11), Epimetheus is an irregularly shaped (nonspherical) body measuring…

John of Damascus, Saint

(Encyclopedia) John of Damascus, Saint, or Saint John DamasceneSaint John Damascenedămˈəsēn [key], c.675–c.749, Syrian theologian, Father of the Church and Doctor of the Church. He was brought up at…

Bishop, Elizabeth

(Encyclopedia) Bishop, Elizabeth, 1911–79, American poet, b. Worcester, Mass., grad. Vassar, 1934. During the 1950s and 60s she lived in Brazil, eventually returning to her native New England, where…

artesian well

(Encyclopedia) artesian well, deep drilled well through which water is forced upward under pressure. The water in an artesian well flows from an aquifer, which is a layer of very porous rock or…

Kircher, Athanasius

(Encyclopedia) Kircher, AthanasiusKircher, Athanasiusätänäˈzē&oobreve;s kĭrkhˈər [key], 1601?–1680, German Jesuit archaeologist, mathematician, biologist, philologist, astronomer, musicologist,…

Janus, in astronomy

(Encyclopedia) JanusJanusjāˈnəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn X (or S10), Janus is an irregularly shaped (nonspherical) body…

osmium

(Encyclopedia) osmiumosmiumŏzˈmēəm [key], metallic chemical element; symbol Os; at. no. 76; at. wt. 190.23; m.p. 3,045±30℃; b.p. 5,027±100℃; sp. gr. 22.57 at 20℃; valence usually +0 to +8. Osmium is…