spectral line

(redirected from Emission line)
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Related to Emission line: continuous spectrum, Line spectra

spectral line

An isolated bright or dark line in a spectrum produced by emission or absorption of light of a single wavelength.

spec′tral line′

a line in a spectrum due to the absorption or emission of light at a discrete frequency.
References in periodicals archive ?
Summary: TEHRAN (FNA)- New research has provided a deeper insight into emission line galaxies, used in several ongoing and upcoming surveys, to help us further understand the composition and fate of the universe.
Indian Institute of Astrophysics (IIA), Bengaluru is the lead institute for the development of Visible Emission Line Coronagraph (VELC) and Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune is developing the Solar Ultraviolet Imager (SUIT) payload for Aditya-L1 mission.
For emission line data, standard AnalaR grade salts of lanthanides were used.
This research is funded by a National Science Foundation Major Research Instrumentation grant to enable coronal emission line observations during the 2017 Great American Solar Eclipse.
Harkness for the first time obtained the spectrum of the solar corona at the occasion of a solar eclipse in North America in 1869, and discovered an emission line emitted by the corona at a wavelength of 530.
2] represent the heights over the ground of emission line and disturbance line, respectively; [r.
The researchers have used the spatial and velocity information provided by this data to create the first high-resolution, fully 3-D model of the Homunculus Nebula and the new model contains none of the assumptions about the cloud's symmetry found in previous studies, which was developed using only a single emission line of near-infrared light emitted by molecular hydrogen gas.
3, note that for the ISD's lower than 1[micro]s, the intensity of the element emission line is lower.
It is detected in nearly all galaxies that are seen from a time more than 1,000,000,000 years from the Big Bang, but getting closer than that, the hydrogen emission line, for some reason, becomes increasingly difficult to see.
H-Alpha light is a spectral line centred on 656nm, and although it is the strongest emission line of ionised hydrogen, our eyes are not very sensitive to the deep red.
A USB-powered Hg/Ne/Ar emission line source, available separately, works seamlessly with proprietary hardware and software to ensure high calibration accuracy.
Gas tightly bound to an ejected black hole would stay with the hole and rotate rapidly, producing a broad emission line showing up as a fat rather than narrow peak.

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