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Quezon

(Encyclopedia)Quezon, province (1990 pop. 1,372,445), E central Luzon, the Philippines. Lucena is the capital. A long, narrow province bordering on the Philippine Sea and containing in part the rugged Sierra Madre ...

parallelogram

(Encyclopedia)parallelogram, closed plane figure bounded by four line segments, or sides, with opposite pairs of sides parallel and equal in length. The rhombus, rectangle, and square are special types of parallelo...

Afyonkarahisar

(Encyclopedia)Afyonkarahisar äfyōnˈkäˌrähĭsärˈ [key] [Turk.,=black castle of opium], city, capital of Afyonkarahisar prov., W central Turkey, at an elevation of c.3,500 ft (1,0...

Deming, William Edwards

(Encyclopedia)Deming, William Edwards dĕmˈĭng [key], 1900–1993, American statistician and quality-control expert, b. Sioux City, Iowa. Deming used statistics to examine industrial production processes for flaw...

Gay-Lussac, Joseph Louis

(Encyclopedia)Gay-Lussac, Joseph Louis zhôzĕfˈ lwē gā-lüsäkˈ [key], 1778–1850, French chemist and physicist. He was professor in Paris at the Sorbonne, at the Polytechnic School, and at the Jardin des Pla...

proportion

(Encyclopedia)proportion, in mathematics, the equality of two ratios. Two pairs of quantities a,b and c,d are in proportion if their ratios a/b and c/d are equal, i.e., if the equation a/b=c/d is true. For example,...

Deane, Silas

(Encyclopedia)Deane, Silas, 1737–89, political leader and diplomat in the American Revolution, b. Groton, Conn. A lawyer and merchant at Wethersfield, Conn., he was elected (1772) to the state assembly and became...

kerosene

(Encyclopedia)kerosene or kerosine, colorless, thin mineral oil whose density is between 0.75 and 0.85 grams per cubic centimeter. A mixture of hydrocarbons, it is commonly obtained in the fractional distillation o...

San Juan, city, Argentina

(Encyclopedia)San Juan săn wän, Span. sän hwän [key], city (1991 pop. 353,476), capital of San Juan prov., W Argentina. It is a commercial and industrial center in an agricultural region. Wine is the chief prod...

Work Projects Administration

(Encyclopedia)Work Projects Administration (WPA), former U.S. government agency, established in 1935 by executive order of President Franklin Delano Roosevelt as the Works Progress Administration; it was renamed th...