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Mannheim
(Encyclopedia)Mannheim mänˈhīm [key], city (1994 pop. 318,025), Baden-Württemberg, W central Germany, on the right bank of the Rhine River and at the mouth of the Neckar River. A bridge connects it with Ludwigs...Fermat, Pierre de
(Encyclopedia)Fermat, Pierre de pyĕr də fĕrmäˈ [key], 1601–65, French mathematician. A magistrate whose avocation was mathematics, Fermat is known as a founder of modern number theory and probability theory....Hubble Space Telescope
(Encyclopedia)Hubble Space Telescope (HST), the first large optical orbiting observatory. Built from 1978 to 1990 at a cost of $1.5 billion, the HST (named for astronomer E. P. Hubble) was expected to provide the c...Alexandria, cities, United States
(Encyclopedia)Alexandria. 1 City (2020 pop. 45,275), seat of Rapides parish, central La., on the Red River; inc. 1818. It is a trade, rail, and medical center for a rich agricultural and timber area. ...image
(Encyclopedia)image, in optics, likeness or counterpart of an object produced when rays of light coming from that object are reflected from a mirror or are refracted by a lens. An image of an object is also formed ...Newton, Sir Isaac
(Encyclopedia)Newton, Sir Isaac, 1642–1727, English mathematician and natural philosopher (physicist), who is considered by many the greatest scientist that ever lived. Newton was his university's representa...telescope
(Encyclopedia)CE5 Mirror arrangements for a reflecting telescope telescope, traditionally, a system of lenses, mirrors, or both, used to gather light from a distant object and form an image of it. Traditional o...Descartes, René
(Encyclopedia)Descartes, René rənāˈ dākärtˈ [key], Lat. Renatus Cartesius, 1596–1650, French philosopher, mathematician, and scientist, b. La Haye. Descartes' methodology was a major influence in the trans...Euclid, Greek mathematician
(Encyclopedia)Euclid yo͞oˈklĭd [key], fl. 300 b.c., Greek mathematician. Little is known of his life other than the fact that he taught at Alexandria, being associated with the school that grew up there in the l...cable television
(Encyclopedia)cable television, the transmission of televised images to viewers by means of coaxial cables. Cable systems receive the television signal, which is sent out over cables to individual subscribers, by a...Browse by Subject
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