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transition de multipôle

См. также в других словарях:

  • transition multipole moment — šuolio daugiapolis momentas statusas T sritis fizika atitikmenys: angl. transition multipole moment vok. Übergangsmultipolmoment, n rus. переходный мультипольный момент, m pranc. moment multipolaire de transition, m …   Fizikos terminų žodynas

  • moment multipolaire de transition — šuolio daugiapolis momentas statusas T sritis fizika atitikmenys: angl. transition multipole moment vok. Übergangsmultipolmoment, n rus. переходный мультипольный момент, m pranc. moment multipolaire de transition, m …   Fizikos terminų žodynas

  • radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …   Universalium

  • Selection rule — In physics and chemistry, especially in the context of quantum mechanics, a selection rule is a condition constraining the physical properties of the initial system and the final system that is necessary for a process to occur with a nonzero… …   Wikipedia

  • RADIOACTIVITÉ — On appelle radioactivité la transformation spontanée d’un noyau atomique au cours de laquelle ce dernier émet un rayonnement. L’observation des effets de ce rayonnement a conduit à la découverte de la radioactivité et des radio éléments. On… …   Encyclopédie Universelle

  • Near and far field — This article is about the electromagnetic concept. For the mathematical, see Near field (mathematics). Antenna field regions for antennas that are shorter than the wavelength of the radiation they emit, such as the whip antenna of a citizen s… …   Wikipedia

  • SPECTROSCOPIE - Spectroscopie nucléaire — Tout comme un atome, un noyau atomique défini comme un ensemble de A nucléons, Z protons et N neutrons est un système quantique qui peut se présenter sous différents états d’énergies différentes. Ces états ne sont pas strictement stationnaires, à …   Encyclopédie Universelle

  • 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

  • Champ de force (chimie) — Pour les articles homonymes, voir champ de force. Un champ de force peut par exemple être utilisé afin de minimiser l énergie d étirement de cette molécule d éthane. Dans le cadre de la m …   Wikipédia en Français

  • Computational chemistry — is a branch of chemistry that uses principles of computer science to assist in solving chemical problems. It uses the results of theoretical chemistry, incorporated into efficient computer programs, to calculate the structures and properties of… …   Wikipedia

  • SAM1 — SAM1, or Semiempirical ab initio Model 1 , is a semiempirical quantum chemistry method for computing molecular properties. It is an implementation the general Neglect of Differential Diatomic Overlap (NDDO) integral approximation, and is… …   Wikipedia

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