potential function of torsion

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• Statistical potential — In protein structure prediction, a statistical potential (also knowledge based potential, empirical potential, or residue contact potential) is an energy function derived from an analysis of known structures in the Protein Data Bank. Typical… …   Wikipedia

• Force field (chemistry) — In the context of molecular mechanics, a force field (also called a forcefield) refers to the functional form and parameter sets used to describe the potential energy of a system of particles (typically but not necessarily atoms). Force field… …   Wikipedia

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• Molecular modelling — The backbone dihedral angles are included in the molecular model of a protein. Modelling of ionic li …   Wikipedia

• Alternatives to general relativity — are physical theories that attempt to describe the phenomena of gravitation in competition to Einstein s theory of general relativity.There have been many different attempts at constructing an ideal theory of gravity. These attempts can be split… …   Wikipedia

• Semi-rigid molecule — A semi rigid molecule is a molecule which has a potential energy surface with a well defined minimum corresponding to a stable structure of the molecule. The only (quantum mechanical) motions that a semi rigid molecule makes are (small) internal… …   Wikipedia

• General relativity — For a generally accessible and less technical introduction to the topic, see Introduction to general relativity. General relativity Introduction Mathematical formulation Resources …   Wikipedia

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• Spring (device) — Helical or coil springs designed for tension Compression sp …   Wikipedia

• gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …   Universalium

• military technology — Introduction       range of weapons, equipment, structures, and vehicles used specifically for the purpose of fighting. It includes the knowledge required to construct such technology, to employ it in combat, and to repair and replenish it.… …   Universalium