Columbia Encyclopedia

Search results

500 results found

equal-time rule

(Encyclopedia)equal-time rule, a Federal Communications Commission rule that requires equal air time for all major candidates competing for political office. It was preceded by the fairness doctrine, abolished in 1...

spring, in geology

(Encyclopedia)spring, in geology, natural flow of water from the ground or from rocks, representing an outlet for the water that has accumulated in permeable rock strata underground. Some of the water that falls as...

Ilemi Triangle

(Encyclopedia)Ilemi Triangle, triangular-shaped region, c.10,000 sq km (3,860 sq mi) in area, at the NW corner of Lake Turkana, E Africa. It borders South Sudan (W), Ethiopia (E) and Kenya (S). A disputed territory...

gin

(Encyclopedia)gin [archaic geneva, from Du. from O.Fr. from Lat.,=juniper], spirituous liquor distilled chiefly from fermented cereals, malted and unmalted, and flavored with juniper berries. It originated in Holla...

calcareous soil

(Encyclopedia)calcareous soil kălkârˈēəs [key], soil formed largely by the weathering of calcareous rocks and fossil shell beds. Different varieties usually contain chalk, marl, and limestone and frequently a ...

Balsas, Río

(Encyclopedia)Balsas, Río rēˈō bälˈsäs [key], river, c.450 mi (720 km) long, rising in the state of Puebla, E central Mexico. One of Mexico's longest rivers, it flows in a curve from south to northwest throu...

Caño Cristales

(Encyclopedia)Caño Cristales, river, c.62 mi (100 km) long, central Colombia, rising in Serranía de la Macarena National Park and flowing SE to the Guayabero River. Also known as the “River of Five Colors” or...

Bossier City

(Encyclopedia)Bossier City bōˈzhər [key], city (2020 pop. 62,701), Bossier parish, NW La., on the Red River, ...

Doolittle, James Harold

(Encyclopedia)Doolittle, James Harold, 1896–1993, American aviator, b. Alameda, Calif. After serving in World War I as a flier he returned to school and earned a Sc.D. from MIT. He then became noted for his speed...

Guericke, Otto von

(Encyclopedia)Guericke, Otto von ôˈtō fən gāˈrĭkə [key], 1602–86, German physicist, noted for his study of pneumatics. He carried out his most important researches while burgomaster (1646–81) of Magdebu...