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free path of particle

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  • Mean free path — In physics, the mean free path is the average distance covered by a moving particle (such as an atom, a molecule, a photon) between successive impacts (collisions) [1] which modify its direction or energy or other particle properties. Contents 1… …   Wikipedia

  • mean free path — Physics, Chem. (in a collection of moving particles)the average distance that a particle travels between successive collisions with other particles. * * * ▪ physics       average distance an object will move between collisions. The actual… …   Universalium

  • mean free path — noun : the average distance traversed between collisions by particles (as molecules of a gas or free electrons in metal) in a system of agitated particles called also free path * * * Physics, Chem. (in a collection of moving particles)the average …   Useful english dictionary

  • mean free path — noun 1. the average distance travelled by a particle, atom, or molecule between collisions with other particles. 2. the average distance travelled by a soundwave between successive reflections …  

  • Path integral formulation — This article is about a formulation of quantum mechanics. For integrals along a path, also known as line or contour integrals, see line integral. The path integral formulation of quantum mechanics is a description of quantum theory which… …   Wikipedia

  • particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …   Universalium

  • Free electron laser — A free electron laser, or FEL, is a laser that shares the same optical properties as conventional lasers such as emitting a beam consisting of coherent electromagnetic radiation which can reach high power, but which uses some very different… …   Wikipedia

  • Free space optical communication — In telecommunications, Free Space Optics (FSO) is an optical communication technology that uses light propagating in free space to transmit data between two points. The technology is useful where the physical connection by the means of fibre… …   Wikipedia

  • Multi-particle collision dynamics — (MPC), also known as stochastic rotation dynamics (SRD)[1], is a particle based mesoscale simulation technique for complex fluids which fully incorporates thermal fluctuations and hydrodynamic interactions.[2] Coupling of embedded particles to… …   Wikipedia

  • Wave–particle duality — Quantum mechanics Uncertainty principle …   Wikipedia

  • radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

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