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glass
(Encyclopedia)glass, hard substance, usually brittle and transparent, composed chiefly of silicates and an alkali fused at high temperature. Glass has become invaluable in modern architecture, illumination, elect...nuclear reactor
(Encyclopedia)CE5 Power reactor system nuclear reactor, device for producing controlled release of nuclear energy. Reactors can be used for research or for power production. A research reactor is designed to pr...acids and bases
(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...Elements (table)
(Encyclopedia)Elements 1 Parentheses indicate most stable isotope; brackets enclose lower and upper bounds of weight variation. ...Turkey , country, Asia and Europe
(Encyclopedia)CE5 Turkey, Turk. Türkiye türˌkēyĕˈ [key], officially Republic of Turkey, republic (2015 est. pop. 78,271,000), 301,380 sq mi (780,574 sq km), SW Asia and SE Europe. It borders on Iraq (SE), ...Browse by Subject
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