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United States Naval Observatory
(Encyclopedia)United States Naval Observatory, a federal astronomical observatory, located in Washington, D. C. It evolved from the Navy's oldest scientific institution, the Depot of Charts and Instruments, founded...Tennessee, river, United States
(Encyclopedia)Tennessee, river, c.650 mi (1,050 km) long, the principal tributary of the Ohio River. It is formed by the confluence of the Holston and French Broad rivers near Knoxville, Tenn., and follows a U-shap...Colorado, state, United States
(Encyclopedia)CE5 Colorado kŏlərădˈə, –rădˈō, –räˈdō [key], state, W central United States, one of the Rocky Mt. states. It is bordered by Wyoming (N), Nebraska (N, E), Kansas (E), Oklahoma and Ne...Taylor, Richard Edward
(Encyclopedia)Taylor, Richard Edward, 1930–2018, Canadian experimental physicist. He was associated primarily with Stanford, where he received his doctorate (1962) and helped build and then worked—first (1962) ...Charleston, cities, United States
(Encyclopedia)Charleston. 1 City (2020 pop. 17,286), seat of Coles co., E Ill.; inc. 1835. Charleston is an industrial, rail, and trade center located in an ...Ordinance of 1787
(Encyclopedia)Ordinance of 1787, adopted by the Congress of Confederation for the government of the Western territories ceded to the United States by the states. It created the Northwest Territory and is frequently...United States National Science Foundation
(Encyclopedia)United States National Science Foundation: see National Science Foundation. ...plasma
(Encyclopedia)plasma, in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion). It is electrically conductive and is affected by magn...United States Merchant Marine Academy
(Encyclopedia)United States Merchant Marine Academy, at Kings Point, N.Y.; for the training of merchant marine officers; established 1936, opened 1943. The academy became coeducational in 1974. Candidates must be b...United States–Mexico–Canada Agreement
(Encyclopedia)United States–Mexico–Canada Agreement: see North American Free Trade Agreement. ...Browse by Subject
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