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Changzhou

(Encyclopedia)Changzhou or Changchow both: chängˈjōˈ [key], city, S Jiangsu prov., E central China,...

photorealism

(Encyclopedia)photorealism, international art movement of the late 1960s and 70s that stressed the precise rendering of subject matter, often taken from actual photographs or painted with the aid of slides. Also kn...

Krutch, Joseph Wood

(Encyclopedia)Krutch, Joseph Wood kro͝och [key], 1893–1970, American author, editor, and teacher, b. Knoxville, Tenn., grad. Univ. of Tennessee, 1915, Ph.D. Columbia, 1923. He was on the editorial staff of the N...

acetone

(Encyclopedia)acetone prōˈpənōn [key], CH3COCH3, colorless, flammable liquid. Acetone melts at −94.8℃ and boils at 56.2℃. It is the simplest aliphatic ketone. Acetone is widely used in industry as a solve...

polyacrylics

(Encyclopedia)polyacrylics pŏlˌēəkrĭlˈĭks [key], group of thermoplastics that are transparent and highly decorative (see plastic). The polyacrylics, or acrylic plastics, are polymers (and copolymers) of deri...

free radical

(Encyclopedia)free radical, in chemistry, a molecule or atom that contains an unpaired electron but is neither positively nor negatively charged. Free radicals are usually highly reactive and unstable. They are pro...

Burnham, Forbes

(Encyclopedia)Burnham, Forbes, 1923–85, prime minister (1964–80) and president (1980–85) of Guyana, formerly British Guiana. His full name was Linden Forbes Sampson Burnham. Of African descent, he received a ...

benzene

(Encyclopedia)benzene bĕnˈzēn, bĕnzēnˈ [key], colorless, flammable, toxic liquid with a pleasant aromatic odor. It boils at 80.1℃ and solidifies at 5.5℃. Benzene is a hydrocarbon, with formula C6H6. The s...

isopropanol

(Encyclopedia)isopropanol, isopropyl alcohol, or 2-propanol īˌsəprōˈpənōl, īˌsəprōˈpĭl [key], (CH3)2CHOH, a colorless liquid that is miscible with water. It melts at −89℃ and boils at 82.3℃. It ...

Chih-i

(Encyclopedia)Chih-i chēˈ-ē [key], 538–97, Chinese Buddhist scholar and founder of the T'ien-t'ai (in Japan, called Tendai, or Lotus) school of Buddhism. Chih-i produced a conceptual framework that integrated ...