packed spheres

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• Close-packing of spheres — hcp and fcc close packing of spheres In geometry, close packing of spheres is a dense arrangement of equal spheres in an infinite, regular arrangement (or lattice). Carl Friedrich Gauss proved that the highest average density – that is, the… …   Wikipedia

• Sphere packing — In mathematics, sphere packing problems are problems concerning arrangements of non overlapping identical spheres which fill a space. Usually the space involved is three dimensional Euclidean space. However, sphere packing problems can be… …   Wikipedia

• Molecular model — A molecular model, in this article, is a physical model that represents molecules and their processes. The creation of mathematical models of molecular properties and behaviour is molecular modelling, and their graphical depiction is molecular… …   Wikipedia

• Octahedral number — 146 magnetic balls, packed in the form of an octahedron In number theory, an octahedral number is a figurate number that represents the number of spheres in an octahedron formed from close packed spheres. The nth octahedral number On can be… …   Wikipedia

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• Molecular models of DNA — While this purified DNA precipitated in a water jug (left) appears to be a formless mass, nucleic acids actually possess intricate structure at the nanoscale (right). M …   Wikipedia

• Waterman butterfly projection — The Waterman Butterfly World Map Projection was created by Steve Waterman and published in 1996. It is an octahedral transformation of a globe, reviving the Butterfly Map principle first developed by Bernard J.S. Cahill (1866 1944) in 1909.… …   Wikipedia

• Dalton, John — born Sept. 5 or 6, 1766, Eaglesfield, Cumberland, Eng. died July 27, 1844, Manchester British chemist and physicist. He spent most of his life in private teaching and research. His work on gases led him to state Dalton s law (see gas laws). He… …   Universalium

• плотно расположенные зерна — (в искусственном керне) [http://slovarionline.ru/anglo russkiy slovar neftegazovoy promyishlennosti/] Тематики нефтегазовая промышленность EN packed spheres …   Справочник технического переводчика

• Opal — For other uses, see Opal (disambiguation). Opal An opal bracelet. The stone size is 18 by 15 mm (0.7 by 0.6 in) General Category …   Wikipedia

• Packing problem — Part of a series on Puzzles …   Wikipedia