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Imperial Valley

(Encyclopedia)Imperial Valley, fertile region in the Colorado Desert, SE Calif., extending S into NW Mexico. Once part of the Gulf of California, most of the region is below sea level; its lowest point is −232 ft...

Kelly, Gene

(Encyclopedia)Kelly, Gene, 1912–96, American dancer, choreographer, movie actor, and director, b. Pittsburgh as Eugene Curran Kelly. Kelly started dancing on Broadway in 1938 and first gained fame in the title ro...

Langmuir, Irving

(Encyclopedia)Langmuir, Irving lăngˈmyo͞or [key], 1881–1957, American chemist, b. Brooklyn, N.Y. Associated (1909–50) with the research laboratory of the General Electric Company, he introduced atomic-hydrog...

Priestley, J. B.

(Encyclopedia)Priestley, J. B. (John Boynton Priestley), 1894–1984, English author. An extraordinarily prolific writer, Priestley worked in a variety of genres. He first wrote literary criticism as a student at C...

Crater Lake National Park

(Encyclopedia)Crater Lake National Park, 183,224 acres (74,206 hectares), SW Oreg., in the Cascade Range; est. 1902. Crater Lake, 20 sq mi (52 sq km), lies in a huge pit that was created when the top of a prehistor...

harvest customs

(Encyclopedia)harvest customs, practices associated with the celebration of the gathering of agricultural crops. The gathering of the harvest—the climax of the year's labors wherever the soil is cultivated—has ...

evaporimeter

(Encyclopedia)evaporimeter ĭvăpˌərĭmˈətər [key], instrument that measures the rate of evaporation of water into the atmosphere, sometimes called an atmometer. Evaporimeters are of two types, those that meas...

fog

(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...

Masekela, Hugh

(Encyclopedia)Masekela, Hugh măsˌəkĕlˈə [key], 1939–2018, South African singer, composer, band leader, and trumpet player. After working with several South African jazz bands, he and his then-wife Miriam Ma...

liturgy, Islamic

(Encyclopedia)liturgy, Islamic, mandatory ritual prayer in Islam (salat) is performed five times a day at dawn, noon, afternoon, sunset, and night. It requires ritual cleanliness, and is preceded by ablutions. The ...