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feldspar

(Encyclopedia)feldspar fĕlˈspär [key], an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron...

insulation

(Encyclopedia)insulation ĭnˌsəlāˈshən, ĭnˌsyo͝o– [key], use of materials or devices to inhibit or prevent the conduction of heat or of electricity. Common heat insulators are, fur, feathers, fiberglass, ...

Silk Road

(Encyclopedia)Silk Road, ancient overland trade route linking Asia and Europe, consisting of a network of caravan routes running from China across central Asia to the shores of the Mediterranean. Its starting point...

Jiangxi

(Encyclopedia)Jiangxi kyăngˈsēˈ, jyängˈ– [key], province (2010 pop. 44,567,475), c.66,000 sq mi (170,940 sq km), SE China. Nanchang is the capital. The largely hilly and mountainous surface is drained by ma...

Ming

(Encyclopedia)Ming mĭng [key], dynasty of China that ruled from 1368 to 1644. The first Ming emperor, Chu Yüan-chang (ruled 1368–98), a former Buddhist monk, joined a rebellion in progress, gained control of it...

tin

(Encyclopedia)tin, metallic chemical element; symbol Sn [Lat. stannum]; at. no. 50; at. wt. 118.710; m.p. 231.9681℃; b.p. 2,270℃; sp. gr. 5.75 (gray), 7.3 (white); valence +2 or +4. Tin exhibits allotropy; abov...

Renoir, Pierre Auguste

(Encyclopedia)Renoir, Pierre Auguste rənwärˈ [key], 1841–1919, French impressionist painter and sculptor, b. Limoges. Renoir went to work at the age of 13 in Paris as a decorator of factory-made porcelain, co...

Hidalgo y Costilla, Miguel

(Encyclopedia)Hidalgo y Costilla, Miguel mēgĕlˈ ēᵺälˈgō ē kōstēˈyä [key], 1753–1811, Mexican priest and revolutionary, a national hero. A creole intellectual, he was influenced by the French Revolut...

Koons, Jeff

(Encyclopedia)Koons, Jeff, 1955–, American artist, b. York, Pa., studied Maryland Institute College of Art (B.F.A., 1976), Art Institute of Chicago. He moved to New York City in 1977 and has lived and worked ther...

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