emission line spectrum

См. также в других словарях:

• emission line — noun : a bright line in the emission spectrum of a gas or vapor compare absorption line in the Dict * * * emission line, a line of radiation in spectrum analysis of stellar objects indicating the presence of a specific chemical element …   Useful english dictionary

• bright-line spectrum — noun : an emission spectrum consisting of bright lines against a dark background * * * bright line spectrum «BRYT LYN», a spectrum composed of a pattern of brightly colored lines on a dark background, having as its source of light a glowing gas… …   Useful english dictionary

• line spectrum — /laɪn ˈspɛktrəm/ (say luyn spektruhm) noun an emission or absorption spectrum consisting of a number of sharply defined lines, as produced by an element in the atomic state. Each line corresponds to a particular wavelength …  

• Spectrum analysis — also known as Emission Spectrochemical Analysis is the original scientific method of charting and analyzing the chemical properties of matter and gases by looking at the bands in their optical spectrum. The empirical laws of spectrum analysis are …   Wikipedia

• 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 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

• spectrum — /spek treuhm/, n., pl. spectra / treuh/, spectrums. 1. Physics. a. an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors… …   Universalium

• 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

• Line filter — A line filter is the kind of electronic filter that is placed between an electronic equipment and a line external to it, to attenuate conducted radio frequencies RFI, a.k.a. electromagnetic interference (EMI) between the line and the equipment.… …   Wikipedia

• Spectral line — Continuous spectrum Emission line …   Wikipedia

• Hydrogen line — For hydrogen lines in general, see Hydrogen spectral series. The hydrogen line, 21 centimeter line or HI line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This… …   Wikipedia