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Angkor

(Encyclopedia)Angkor ăngˈkôr [key], site of several capitals of the Khmer Empire, north of Tônlé Sap, NW Cambodia, for about five and a half centuries (9th to 15th), the heart of the empire. Extending over an ...

radio

(Encyclopedia)CE5 A. AM transmitter B. AM receiver radio, transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially...

theater

(Encyclopedia)CE5 Plan of Greek amphitheater CE5 Proscenium theater CE5 Theater-in-the-round theater, building, structure, or space in which dramatic performances take place. In its broadest sense theater...

meteor

(Encyclopedia)meteor, appearance of a small particle flying through space that interacts with the earth's upper atmosphere. While still outside the atmosphere, the particle is known as a meteoroid. Countless meteor...

materialism

(Encyclopedia)materialism, in philosophy, a widely held system of thought that explains the nature of the world as entirely dependent on matter, the fundamental and final reality beyond which nothing need be sought...

Giorgione

(Encyclopedia)Giorgione jōrjôˈnā [key], c.1478–1510, Venetian painter, b. Castelfranco Veneto; fellow student of Titian under Giovanni Bellini in Venice. Giorgione was known also as Zorgo or Zorgi da Castelfr...

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, ...

Ionic order

(Encyclopedia)Ionic order īŏnˈĭk [key], one of the early orders of architecture. The spreading scroll-shaped capital is the distinctive feature of the Ionic order; it was primarily a product of Asia Minor, wher...

Euclid, Greek mathematician

(Encyclopedia)Euclid yo͞oˈklĭd [key], fl. 300 b.c., Greek mathematician. Little is known of his life other than the fact that he taught at Alexandria, being associated with the school that grew up there in the l...

Feynman, Richard Phillips

(Encyclopedia)Feynman, Richard Phillips fīnˈmən [key], 1918–88, American physicist, b. New York City, B.S. Massachusetts Institute of Technology, 1939, Ph.D. Princeton, 1942. From 1942 to 1945 he worked on the...