half-spherical
61Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
62Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
63National Health Service (England) — The NHS Logo for England …
64fungus — fungic /fun jik/, adj. funguslike, adj. /fung geuhs/, n., pl. fungi /fun juy, fung guy/, funguses, adj. n. 1. any of a diverse group of eukaryotic single celled or multinucleate organisms that live by decomposing and absorbing the organic… …
65Manifold — For other uses, see Manifold (disambiguation). The sphere (surface of a ball) is a two dimensional manifold since it can be represented by a collection of two dimensional maps. In mathematics (specifically in differential geometry and topology),… …
66Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …
67Diffraction — Computer generated intensity pattern formed on a screen by diffraction from a square aperture …
68Dennis Rawlins — Born 1937 (age 73–74) Baltimore, Maryland, United States Nationality American Occupation Astronomer, Historian, Publisher Dennis Rawlins (born 1937 in Baltimore, Maryland) is an American astronomer, historian, and publisher …
69Kepler problem in general relativity — The Kepler problem in general relativity involves solving for the motion of two spherical bodies interacting with one another by gravitation, as described by the theory of general relativity.Typically, and in this article, one body is assumed to… …
70Counter-Earth — For the Marvel Comics planet, see Counter Earth (comics). The Counter Earth is a hypothetical body of the Solar system first hypothesized by the presocratic philosopher Philolaus to support his non geocentric cosmology, in which all objects in… …
