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spectral emission

См. также в других словарях:

  • spectral — spectral, ale, aux [ spɛktral, o ] adj. • analyse spectrale 1859; cf. spectralement (1847); de spectre 1 ♦ Phys. Qui repose sur l étude des spectres (2o). Analyse spectrale : ensemble des techniques d étude et de détermination des spectres. ♢ Qui …   Encyclopédie Universelle

  • Emission — may refer to: * Flue gas, also: ** Exhaust gas, flue gas occurring as a result of the combustion of a fuel * Emission of air pollutants * Emission (electromagnetic radiation), the process by which the energy of a photon is released by another… …   Wikipedia

  • Emission spectroscopy — is a spectroscopic technique which examines the wavelengths of photons emitted by atoms or molecules during their transition from an excited state to a lower energy state. Each element emits a characteristic set of discrete wavelengths according… …   Wikipedia

  • Spectral bands — are part of optical spectra of polyatomic systems, including condensed materials, large molecules etc. Each line corresponding to one level in atom splits in molecules. When the number of atoms is large, one gets continuum of energy levels, so… …   Wikipedia

  • spectral line — n. any of a number of lines in a spectrum produced by the emission of electromagnetic radiation from an excited atom: a spectral line represents the energy difference between two energy levels …   English World dictionary

  • Spectral line — Continuous spectrum Emission line …   Wikipedia

  • Emission spectrum — The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted by the element s atoms or the compound s molecules when they are returned to a lower energy state. Each element s …   Wikipedia

  • Spectral linewidth — The spectral linewidth characterizes the width of a spectral line, such as in the electromagnetic emission spectrum of an atom, or the frequency spectrum of an acoustic or electronic system. For example, the emission of an atom usually has a very …   Wikipedia

  • Spectral rendering — In computer graphics, spectral rendering is where a scene s light transport is modeled with real wavelengths. This process is typically a lot slower than traditional rendering, which renders the scene in its red, green, and blue components and… …   Wikipedia

  • Spectral index — In radio astronomy, the spectral index of a radio source can hint at its physical properties. The spectral index is calculated from an assumed power law dependence for flux given by Spropto u^alpha where S is flux and u is frequency. A more… …   Wikipedia

  • Spectral splatter — In radio electronics or acoustics, spectral splatter (also called switch noise ) refers to spurious emissions that result from an abrupt change in the transmitted signal, usually when transmission is started or stopped.For example, a device… …   Wikipedia

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