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Fraser, river, Canada

(Encyclopedia)Fraser, chief river of British Columbia, Canada, c.850 mi (1,370 km) long. It rises in the Rocky Mts., at Yellowhead Pass, near the British Columbia–Alta. line and flows northwest through the Rocky ...

Stirling engine

(Encyclopedia)Stirling engine, an external combustion reciprocating engine having an enclosed working fluid that is alternately compressed and expanded to operate a piston, thus converting heat from a variety of so...

Adygey Republic

(Encyclopedia)Adygey Republic ədĭgyĕˈ [key] or Adygeya, formerly Adyge Autonomous Region, constituent republic (1990 est. pop. 435,000), c.2,935 sq mi (7,600 sq km), an enclave within Krasnodar Territory, SE Eu...

Boyle, Robert

(Encyclopedia)Boyle, Robert, 1627–91, Anglo-Irish physicist and chemist. The seventh son of the 1st earl of Cork, he was educated at Eton and on the Continent and conducted most of his researches at his own labor...

stellar evolution

(Encyclopedia)CE5 The above Hertzsprung-Russell (H-R) diagram shows the track of stellar evolution for a typical star. After spending much of its life evolving toward or along the main sequence, the star becomes...

planet

(Encyclopedia)planet [Gr.,=wanderer], a large nonluminous body of rock, gas, or ice that orbits the sun or another star, has a rounded shape due to gravity, and has cleared its orbit of smaller objects. The term, o...

automobile

(Encyclopedia)CE5 Automobile chassis CE5 Two views of a six-cylinder automobile engine automobile, self-propelled vehicle used for travel on land. The term is commonly applied to a four-wheeled vehicle desig...

Negev

(Encyclopedia)Negev nĕgˈĕb [key] [Heb.,=dry], hilly desert region of S Israel, c.5,140 sq mi (13,310 sq km), bordered by the Judaean Hills, the Wadi Arabah, the Sinai peninsula, and the narrow Mediterranean coas...

Ob

(Encyclopedia)Ob ôp [key], river, c.2,300 mi (3,700 km) long, W Siberian Russia. With the Irtysh River, its chief tributary, it is c.3,460 mi (5,600 km) long and is the world's fourth longest river. Formed by the ...