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Tennessee-Tombigbee Waterway

(Encyclopedia)Tennessee-Tombigbee Waterway, system of navigation channels, 234 mi (377 km) long, Ala. and Miss., connecting the Tennessee River with the Tombigbee River and, via the Mobile River, with the Gulf of M...

compost

(Encyclopedia)compost, substance composed mainly of partly decayed organic material that is applied to fertilize the soil and to increase its humus content; it is often used in vegetable farming, home gardens, flow...

Economic Community of West African States

(Encyclopedia)Economic Community of West African States (ECOWAS), organization established in 1975 to increase economic cooperation and development in West Africa. Members include Benin, Burkina Faso, Cape Verde, C...

pressure

(Encyclopedia)pressure, in mechanics, ratio of the force acting on a surface to the area of the surface; it is thus distinct from the total force acting on a surface. A force can be applied to and sustained by a si...

agricultural subsidies

(Encyclopedia)agricultural subsidies, financial assistance to farmers through government-sponsored price-support programs. Beginning in the 1930s most industrialized countries developed agricultural price-support p...

Richardson, Sir Owen Willans

(Encyclopedia)Richardson, Sir Owen Willans, 1879–1959, British physicist, Ph.D. University College, London, 1904. He was a professor at Princeton from 1906 to 1913 and at King's College London from 1914 until his...

Cooper, Myles

(Encyclopedia)Cooper, Myles, 1737?–1785, 2d president of King's College (now Columbia Univ.), b. England, educated at Oxford. He was ordained a priest in 1761 and went to King's College (1762) as professor of mor...

Cuenca, city, Ecuador

(Encyclopedia)Cuenca kwĕngˈkä [key], city, alt. c.8,000 ft (2,440 m), capital of Azuay prov., S central ...

fatigue, in engineering

(Encyclopedia)fatigue, in engineering, microscopic cracking of materials, especially metals, after repeated applications of stress. Fissures may be formed within pieces of metal during their manufacture when, while...

Pontics

(Encyclopedia)Pontics, mountain system, N Turkey, extending c.700 mi (1,100 km) along the southern coast of the Black Sea. The Pontics generally increase in height from west to east, culminating in Kaçkar Daği (1...