face-centered packing

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

• 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

• Atomic packing factor — In crystallography, atomic packing factor (APF) or packing fraction is the fraction of volume in a crystal structure that is occupied by atoms. It is dimensionless and always less than unity. For practical purposes, the APF of a crystal structure …   Wikipedia

• Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… …   Wikipedia

• Cubic crystal system — A rock containing three crystals of pyrite (FeS2). The crystal structure of pyrite is simple cubic, and this is reflected in the cubic symmetry of its natural crystal facets …   Wikipedia

• Colloidal crystal — A colloidal crystal is an ordered array of colloid particles, analogous to a standard crystal whose repeating subunits are atoms or molecules.[1] A natural example of this phenomenon can be found in the gem opal, where spheres of silica assume a… …   Wikipedia

• Periodic table (crystal structure) — The structures of metallic elements adopted at normal temperatures are colour coded and shown below Greenwood Earnshaw] , the only exception is mercury, Hg, which is a liquid and the structure refers to the low temperature form. The melting… …   Wikipedia

• Diamond cubic — Unit cell of the diamond cubic crystal structure …   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

• Kepler conjecture — In mathematics, the Kepler conjecture is a conjecture about sphere packing in three dimensional Euclidean space. It says that no arrangement of equally sized spheres filling space has a greater average density than that of the cubic close packing …   Wikipedia

• Rhombic dodecahedral honeycomb — The rhombic dodecahedra honeycomb is a space filling tessellation (or honeycomb) in Euclidean 3 space. It is the Voronoi diagram of the face centered cubic sphere packing, which is believed to be the densest possible packing of equal spheres in… …   Wikipedia