emission line

emission line
: 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. 2012.

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  • emission line — emisijos linija statusas T sritis fizika atitikmenys: angl. emission line vok. Emissionslinie, f rus. линия испускания, f pranc. raie d’émission, f …   Fizikos terminų žodynas

  • emission line — noun A spectral line resulting from the emission of electromagnetic radiation from an atom or other species as it decays from an excited state to one of lower energy …   Wiktionary

  • Low-ionization nuclear emission-line region — cite journal author= L. C. Ho, A. V. Filippenko, W. L. W. Sargent title=A Search for Dwarf Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies journal=Astrophysical Journal Supplement year=1997 volume=112… …   Wikipedia

  • MCELS (Magellanic Cloud Emission-line Survey) — The Magellanic Cloud Emission Line Survey (MCELS) is a joint project of Cerro Tololo Inter American Observatory (Chile) and the University of Michigan using the CTIO Curtis/Schmidt Telescope. The main goal of the project is to trace the ionized… …   Wikipedia

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  • Line source — A line source is a source of air, noise, water contamination or electromagnetic radiation that emanates from a linear (one dimensional) geometry. The most prominent linear sources are roadway air pollution, aircraft air emissions, roadway noise,… …   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

  • Emission theory (vision) — Emission theory or extramission theory is the proposal that visual perception is accomplished by rays of light emitted by the eyes. This theory has been replaced by intromission theory, which is that visual perception is accomplished by rays of… …   Wikipedia

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