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voltmeter
(Encyclopedia)voltmeter, instrument used to measure differences of electric potential, commonly called voltage, in volts or units that are multiples or fractions of volts. A voltmeter is usually combined with an am...Premadasa, Ranasinghe
(Encyclopedia)Premadasa, Ranasinghe, 1924–1993, Sri Lankan political leader. As a member of the Ceylon Labour party, he worked as a labor organizer and was elected deputy mayor of Colombo in 1955. He then joined ...spectroscope
(Encyclopedia)spectroscope, optical instrument for producing spectral lines and measuring their wavelengths and intensities, used in spectral analysis (see spectrum). When a material is heated to incandescence it e...Oldenburg, Claes
(Encyclopedia)Oldenburg, Claes klăs [key], 1929–, Swedish-American artist, b. Stockholm, raised Chicago, studied at Yale, moved to New York 1956. Usually considered part of the pop art movement, Oldenburg explor...Ottonian art
(Encyclopedia)Ottonian art ŏtōˈnēən [key], art produced (c.900–1050) in the East Frankish kingdom of Germany known, after the emperors Otto (936–1002), as the Ottonian kingdom. Influenced by Byzantine and ...carbon dioxide
(Encyclopedia)carbon dioxide, chemical compound, CO2, a colorless, odorless, tasteless gas that is about one and one-half times as dense as air under ordinary conditions of temperature and pressure. It does not bur...atmosphere
(Encyclopedia) CE5 Atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other plane...function
(Encyclopedia)function, in mathematics, a relation f that assigns to each member x of some set X a corresponding member y of some set Y; y is said to be a function of x, usually denoted f(x) (read “f of x ”)....hypothalamus
(Encyclopedia)hypothalamus hīˌpəthălˈəməs [key], an important supervisory center in the brain, rich in ganglia, nerve fibers, and synaptic connections. It is composed of several sections called nuclei, each ...antifreeze
(Encyclopedia)antifreeze, substance added to a solvent to lower its freezing point. The solution formed is called an antifreeze mixture. Antifreeze is typically added to water in the cooling system of an internal-c...Browse by Subject
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