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titanium

(Encyclopedia)titanium tītāˈnēəm, tĭ– [key] [from Titan], metallic chemical element; symbol Ti; at. no. 22; at. wt. 47.867; m.p. 1,675℃; b.p. 3,260℃; sp. gr. 4.54 at 20℃; valence +2, +3, or +4. Titani...

infrared astronomy

(Encyclopedia)infrared astronomy, study of celestial objects by means of the infrared radiation they emit, in the wavelength range from about 1 micrometer to about 1 millimeter. All objects, from trees and building...

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

aerial and satellite photography

(Encyclopedia)aerial and satellite photography, technology and science of taking still or moving-picture photographs from a camera mounted on a balloon, airplane, satellite, rocket, or spacecraft. In the 19th cent....

jellyfish

(Encyclopedia)jellyfish, common name for the free-swimming stage (see polyp and medusa), of certain invertebrate animals of the phylum Cnidaria (the coelenterates). The body of a jellyfish is shaped like a bell or ...

Maugham, Somerset

(Encyclopedia)Maugham, Somerset (William Somerset Maugham) môm [key], 1874–1965, English writer, b. Paris. He was noted as an expert storyteller and a master of the technique of fiction. An introverted child aff...

commedia dell'arte

(Encyclopedia)commedia dell'arte kōm-māˈdēä dĕl-lärˈtā [key], popular form of comedy employing improvised dialogue and masked characters that flourished in Italy from the 16th to the 18th cent. The impac...

Polanski, Roman

(Encyclopedia)Polanski, Roman, 1933–, Polish-French film director, b. Paris. His family returned to Kraków, Poland, when he was three. His parents were imprisoned in Nazi concentration camps and his mother died ...

Stoppard, Tom

(Encyclopedia)Stoppard, Tom, 1937–, English playwright, b. Zlín, Czechoslovakia (now in the Czech Republic), as Tomas Straussler. During his childhood he and his family moved to Singapore, later (1946) settling ...

Tagore, Sir Rabindranath

(Encyclopedia)Tagore, Sir Rabindranath rəbĭnˈdrənät təgôrˈ, täko͝orˈ [key], 1861–1941, Indian author and guru, b. Calcutta (now Kolkata). Tagore came from a wealthy Bengali family. He went abroad in 18...