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X-ray astronomy
(Encyclopedia)X-ray astronomy, study of celestial objects by means of the X rays they emit, in the wavelength range from 0.01 to 10 nanometers. X-ray astronomy dates to 1949 with the discovery that the sun emits X ...frieze
(Encyclopedia)frieze, in architecture, the member of an entablature between the architrave and the cornice or any horizontal band used for decorative purposes. In the first type the Doric frieze alternates the meto...vestal
(Encyclopedia)vestal vĕsˈtəl [key], in Roman religion, priestess of Vesta. The vestals were first two, then four, then six in number. While still little girls, they were chosen from prominent Roman families to s...In
(Encyclopedia)In, symbol for the element indium. ...Weelkes, Thomas
(Encyclopedia)Weelkes, Thomas, c.1575–1623, English composer. His four books of madrigals (1597–1600) mark Weelkes as one of the great English madrigalists. His music is remarkable for melodic characterization ...Olbers, Heinrich Wilhelm Matthäus
(Encyclopedia)Olbers, Heinrich Wilhelm Matthäus hīnˈrĭkh vĭlˈhĕlm mätĕˈo͝os ôlˈbərs [key], 1758–1840, German astronomer and physician. He originated (1797) the first satisfactory method for calculat...fire
(Encyclopedia)fire, the phenomenon of combustion as seen in light, flame, and heat. One of the basic tools of human culture, its use is extremely ancient, predating the existence of Homo sapiens by several hundred ...penates
(Encyclopedia)penates pənāˈtēz [key], in Roman religion, household gods, primarily guardians of the storeroom. Theirs was the chief cult of every Roman household, especially in early times. They were worshiped ...National Radio Astronomy Observatory
(Encyclopedia)National Radio Astronomy Observatory (NRAO), federal observatory for radio astronomy, founded in 1956 and operated under contract with the National Science Foundation by Associated Universities, Inc.,...Nuffield Radio Astronomy Laboratories
(Encyclopedia)Nuffield Radio Astronomy Laboratories: see Jodrell Bank Observatory. ...Browse by Subject
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