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Mercator, Gerardus
(Encyclopedia)Mercator, Gerardus gārˈhärt krāˈmər [key], 1512–94, Flemish geographer, mathematician, and cartographer. He studied in Louvain, where he had a geographical establishment (1534). From 1537 to 1...Pleiad
(Encyclopedia)Pleiad plēˈăd [key] [from Pleiades], group of seven tragic poets of Alexandria who flourished c.280 b.c. under Ptolemy II Philadelphus. Of the works of the men usually given in lists of the Pleiad ...map
(Encyclopedia)map, conventionalized representation of spatial phenomena on a plane surface. Unlike photographs, maps are selective and may be prepared to show various quantitative and qualitative facts, including b...magnitude
(Encyclopedia)magnitude, in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. a.d.), all visible with the unaided eye, were ranked on a brightness sc...Amman
(Encyclopedia)Amman ämänˈ [key], city (1997 est. pop. 1,415,000), capital of Jordan, N central Jordan, on the Jabbok (Wadi Zerka) River. Jordan's largest city and industrial and commercial heart, it is also a tr...Saxons
(Encyclopedia)Saxons, Germanic people, first mentioned in the 2d cent. by Ptolemy as inhabiting the southern part of the Cimbric Peninsula (S Jutland). Holding the area at the mouth of the Elbe River and some of th...Servetus, Michael
(Encyclopedia)Servetus, Michael sərvēˈtəs [key], 1511–53, Spanish theologian and physician. His name in Spanish was Miguel Serveto. In his early years he came in contact with some of the leading reformers in ...societies, learned and literary
(Encyclopedia)societies, learned and literary, associations of individuals with a common professional interest, intended to promote learning. Many societies publish the proceedings of their meetings as well as jour...Macedon
(Encyclopedia)Macedon măsˈədŏn [key], ancient country, roughly equivalent to the modern region of Macedonia. In the history of Greek culture Macedon had its single significance in producing the conquerors and a...meteorology
(Encyclopedia)meteorology, branch of science that deals with the atmosphere of a planet, particularly that of the earth, the most important application of which is the analysis and prediction of weather. Individual...Browse by Subject
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