Columbia Encyclopedia
Search results
500 results found
vacuum
(Encyclopedia)vacuum, theoretically, space without matter in it. A perfect vacuum has never been obtained; the best human-generated vacuums contain less than 100,000 gas molecules per cc, compared to about 30 billi...Baikonur Cosmodrome
(Encyclopedia)Baikonur or Baykonur Cosmodrome both: bīˌkəno͞orˈ [key], formerly secret aerospace launch complex, Qyzylorda prov., S central Kazakhstan, near Baikonur (originally, 1958–95, Leninsk) but c.200 ...Vesta, in astronomy
(Encyclopedia)Vesta vĕsˈtə [key], in astronomy, the fourth asteroid to be discovered. It was found in 1807 by H. Olbers. It is the third largest asteroid in size, with a diameter of c.326 mi (525 km). Its averag...Herzberg, Gerhard
(Encyclopedia)Herzberg, Gerhard gĕrˈhärt hûrtsˈbûrg [key], 1904–99, Canadian physicist, b. Hamburg, Germany. He studied at Darmstadt, Göttingen, and Bristol, England, receiving a doctorate in engineering p...Rodríguez, Martín
(Encyclopedia)Rodríguez, Martín rôᵺrēˈgās [key], 1771–1844, Argentine general, governor of Buenos Aires prov. (1820–24). With Juan Martín de Pueyrredón, he organized a force to expel the British invad...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...Economic Cooperation Administration
(Encyclopedia)Economic Cooperation Administration: see Marshall Plan. ...Rural Electrification Administration
(Encyclopedia)Rural Electrification Administration (REA), former agency of the U.S. Dept. of Agriculture charged with administering loan programs for electrification and telephone service in rural areas. The REA wa...Farm Credit Administration
(Encyclopedia)Farm Credit Administration (FCA), an independent agency of the executive branch of the federal government that supervises and regulates the Farm Credit System (FCS) for American agriculture. The Farm ...Works Progress Administration
(Encyclopedia)Works Progress Administration: see Work Projects Administration. ...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
-
Places
+-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-
