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color index
(Encyclopedia)color index, in astronomy, difference in an object's brightness as recorded between any two well-defined bands of the electromagnetic spectrum by using optical filters of different colors. If blue and...Behaim, Martin
(Encyclopedia)Behaim, Behem, or Boeheim, Martin all: bāˈhīm [key], b. 1436? or 1459?, d. 1506?, German traveler and cosmographer. He studied (possibly under Regiomontanus) astronomy, navigation, and mathematics....opposition
(Encyclopedia)opposition, in astronomy, alignment of two celestial bodies on opposite sides of the sky as viewed from earth. Opposition of the moon or planets is often determined in reference to the sun. Only the s...Moscow State University
(Encyclopedia)Moscow State University, at Moscow, Russia, officially M. V. Lomonosov Moscow State Univ.; founded 1755 as Moscow Univ. by the Russian scientist M. V. Lomonosov, renamed Moscow State Univ. after the R...Apianus, Petrus
(Encyclopedia)Apianus, Petrus pāˈtər bēˈnəvĭts, bĕnˈəvĭts [key], 1495–1552, German cosmographer and mathematician. He was professor of mathematics at Ingolstadt and was noted for his knowledge of astro...living will
(Encyclopedia)living will or advance health care directive, legal document in which a person expresses in advance his or her wishes concerning the use of artificial life support and other medical treatment should t...Schiller, Friedrich von
(Encyclopedia)Schiller, Friedrich von, 1759–1805, German dramatist, poet, and historian, one of the greatest of German literary figures, b. Marbach, Württemberg. The poets of German romanticism were strongly inf...Wren, Sir Christopher
(Encyclopedia)Wren, Sir Christopher, 1632–1723, English architect. A mathematical prodigy, he studied at Oxford. He was professor of astronomy at Gresham College, London, from 1657 to 1661, when he became Savilia...Al-Biruni, Abu Rayhan Muhammad ibn Ahmad
(Encyclopedia)Al-Biruni or Al Beruni, Abu Rayhan Muhammad ibn Ahmad äbo͞oˈ rīhänˈ məhămˈĭd ĭbˈən äˈməd ăl-bēro͞oˈnē, ăl bĕro͞oˈnē [key], b. 973, d. after 1050, Central Asian scientist. His...Dyson, Sir Frank Watson
(Encyclopedia)Dyson, Sir Frank Watson dīˈsən [key], 1868–1939, English astronomer, b. Ashby-de-la-Zouch, grad. Cambridge. He was astronomer royal of Scotland (1905–10) and of England (from 1910). As director...Browse by Subject
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