polar lattice
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Lattice energy — Sodium chloride crystal lattice The lattice energy of an ionic solid is a measure of the strength of bonds in that ionic compound. It is usually defined as the enthalpy of formation of the ionic compound from gaseous ions and as such is… … Wikipedia
Lattice protein — Lattice proteins are highly simplified computer models of proteins which are used to investigate protein folding. Because proteins are such large molecules, containing hundreds or thousands of atoms, it is not possible with current technology to… … Wikipedia
Hydrophobic-polar protein folding model — The hydrophobic polar protein folding model is a highly simplified model for examining protein folds in space. First proposed by Dill in 1985, it is motivated by the observation that hydrophobic interactions between amino acid residues are the… … Wikipedia
Optical rectification — Electro optic rectification (EOR) (also referred to as optical rectification) is a non linear optical process which consists in the generation of a quasi DC polarization in a non linear medium at the passage of an intense optical beam. For… … Wikipedia
Ant colony optimization algorithms — Ant behavior was the inspiration for the metaheuristic optimization technique. In computer science and operations research, the ant colony optimization algorithm (ACO) is a probabilistic technique for solving computational problems which can be… … Wikipedia
Chemical polarity — Polar molecule and Nonpolar redirect here. For other uses see Polar (disambiguation). A water molecule, a commonly used example of polarity. The two charges are present with a negative charge in the middle (red shade), and a positive charge at… … Wikipedia
Crystal system — Diamond crystal structure consists of face centered cubic lattice. In crystallography, the terms crystal system, crystal family, and lattice system each refer to one of several classes of space groups, lattices, point groups, or crystals.… … Wikipedia
chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another … Universalium
Mathematics 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… … Universalium
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
Polaron — A polaron is a quasiparticle composed of a charge and its accompanying polarization field. A slow moving electron in a dielectric crystal, interacting with lattice ions through long range forces will permanently be surrounded by a region of… … Wikipedia
