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Mauna Kea Observatories
(Encyclopedia)Mauna Kea Observatories mouˈnə kāˈə [key], astronomical observatory complex located on Mauna Kea peak, the “white mountain” on the island of Hawaii, at an altitude of more than 13,600 ft (4,1...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...Hertzsprung, Ejnar
(Encyclopedia)Hertzsprung, Ejnar īˈnär hĕrtsˈspro͞ong [key], 1873–1967, Danish astronomer. Although trained as a chemical engineer, Hertzsprung made his career in astronomy, specializing in exacting photogr...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...infrared radiation
(Encyclopedia)infrared radiation, electromagnetic radiation having a wavelength in the range from c.75 × 10−6 cm to c.100,000 × 10−6 cm (0.000075–0.1 cm). Infrared rays thus occupy that part of the electrom...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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