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radiometer
(Encyclopedia)radiometer rāˌdēŏmˈətər [key], instrument for detection or measurement of electromagnetic radiation; the term is applied in particular to devices used to measure infrared radiation. One of the ...Safavid
(Encyclopedia)Safavid säfäˈwēd [key], Iranian dynasty (1499–1736), that established Shiite Islam in Iran as an official state religion. The Safavid state provided both the territorial and societal foundations...free energy
(Encyclopedia)free energy or Gibbs free energy, quantity derived from the relationships between heat and work studied in thermodynamics and used as a measure of the relative stability of a physical or chemical syst...calorie
(Encyclopedia)calorie, abbr. cal, unit of heat energy in the metric system. The measurement of heat is called calorimetry. The calorie, or gram calorie, is the quantity of heat required to raise the temperature of ...Dunhuang
(Encyclopedia)Dunhuang or Tunhwang both: do͞on-hwäng [key], town, extreme NW Gansu prov., China. Crescent Lake, a noted tourist attraction surrounded by high sand dunes, is there. The Caves of the Thousand Buddha...Hovhaness, Alan
(Encyclopedia)Hovhaness, Alan hōvhäˈnəs [key], 1911–2000, American composer, b. Somerville, Mass., as Alan Vaness Chakmakjian. Hovhaness was of Armenian and Scottish descent, and many of his works are based o...Fustel de Coulanges, Numa Denis
(Encyclopedia)Fustel de Coulanges, Numa Denis nümäˈ dənēˈ füstĕlˈ də ko͞oläNzhˈ [key], 1830–89, French historian. His masterly study, La Cité antique (1864, tr. The Ancient City, 1874), stressed the...designer drug
(Encyclopedia)designer drug, chemical substance synthesized in a laboratory that is intended to have effects similar to those of a drug that is a controlled substance, such as methamphetamine, marijuana, LSD, or an...spectrum
(Encyclopedia) CE5 Dispersion of white light by a triangular prism spectrum, arrangement or display of light or other form of radiation separated according to wavelength, frequency, energy, or some other propert...ketoprofen
(Encyclopedia)ketoprofen kēˌtəprōˈfĭn [key], nonsteroidal anti-inflammatory drug (NSAID) with anti-inflammatory, analgesic, and fever-reducing effects, used to relieve the symptoms of headaches, arthritis, an...Browse by Subject
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