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solar energy
(Encyclopedia)solar energy, any form of energy radiated by the sun, including light, radio waves, and X rays, although the term usually refers to the visible light of the sun. Solar energy is needed by green plants...propaganda
(Encyclopedia)propaganda, systematic manipulation of public opinion, generally by the use of symbols such as flags, monuments, oratory, and publications. Modern propaganda is distinguished from other forms of commu...Thomas, Dylan
(Encyclopedia)Thomas, Dylan dĭlˈən [key], 1914–53, Welsh poet, b. Swansea. An extraordinarily individualistic writer, Thomas is ranked among the great 20th-century poets. He grew up in Swansea, the son of a te...Winchell, Walter
(Encyclopedia)Winchell, Walter, 1897–1972, journalist and broadcaster, b. New York City as Walter Winchel. He performed in vaudeville, and adopted a marquee's misspelling of his surname. After serving two years i...radar
(Encyclopedia)radar, system or technique for detecting the position, movement, and nature of a remote object by means of radio waves reflected from its surface. Although most radar units use microwave frequencies, ...Pond Inlet
(Encyclopedia)Pond Inlet, trading post (1991 pop. 974), N Baffin Island, Nunavut Territory, Canada, opposite Bylot Island. A government radio station, a post of the Royal Canadian Mounted Police, and Anglican and R...RFID
(Encyclopedia)RFID: see radio-frequency identification. ...automatic direction finder
(Encyclopedia)automatic direction finder: see radio range. ...air navigation
(Encyclopedia)air navigation, science and technology of determining the position of an aircraft with respect to the surface of the earth and accurately maintaining a desired course (see navigation). Basic to air ...radiosonde
(Encyclopedia)radiosonde rāˈdēōsŏnd [key], group of instruments for simultaneous measurement and radio transmission of meteorological data, including temperature, pressure, and humidity of the atmosphere. The ...Browse by Subject
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