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313-sphere — Stereographic projection of the hypersphere s parallels (red), meridians (blue) and hypermeridians (green). Because this projection is conformal, the curves intersect each other orthogonally (in the yellow points) as in 4D. All curves are circles …
32The Sphere — is a large metallic sculpture by German sculptor Fritz Koenig, currently displayed in Battery Park, that once stood in the middle of Austin Tobin Plaza, the area between the World Trade Center towers in Manhattan. After being recovered from the… …
33Armillary sphere — An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of the celestial sphere. Description and use of the armillary sphere The exterior parts of this machine are a compages of brass rings, which represent …
34Celestial sphere — [ celestial equator.] In astronomy and navigation, the celestial sphere is an imaginary rotating sphere of gigantic radius , concentric and coaxial with the Earth. All objects in the sky can be thought of as lying upon the sphere. Projected from… …
35Simplicial sphere — In geometry and combinatorics, a simplicial (or combinatorial) d sphere is a simplicial complex homeomorphic to the d dimensional sphere. Some simplicial spheres arise as the boundaries of convex polytopes, however, in higher dimensions most… …
36Bloch sphere — In quantum mechanics, the Bloch sphere is a geometrical representation of the pure state space of a two level quantum mechanical system named after the physicist Felix Bloch. Alternatively, it is the pure state space of a 1 qubit quantum register …
37Outer sphere electron transfer — Outer sphere refers to an electron transfer (ET) event that occurs between chemical species that remain separate intact before, during, and after the ET event.[1] In contrast, for inner sphere electron transfer the participating redox sites… …
38Circle of the sphere — Circle Cir cle (s[ e]r k l), n. [OE. cercle, F. cercle, fr. L. circulus (Whence also AS. circul), dim. of circus circle, akin to Gr. kri kos, ki rkos, circle, ring. Cf. {Circus}, {Circum }.] [1913 Webster] 1. A plane figure, bounded by a single… …
39Stena sphere — The Stena sphere is a conglomerate with three parent companies, Stena Metall AB, Stena Sessan AB and Stena AB and is based in Gothenburg in Sweden. It is wholly owned by the Olsson family. The chief executive officer of the group is Dan Sten… …
40Parallel circles of a sphere — Parallel Par al*lel, a. [F. parall[ e]le, L. parallelus, fr. Gr. ?; para beside + ? of one another, fr. ? other, akin to L. alius. See {Alien}.] 1. (Geom.) Extended in the same direction, and in all parts equally distant; as, parallel lines;… …
