A distinctive narrow spectral feature of chemical species
Continuous spectrum
Emission lines (discrete spectrum)
Absorption spectrum with Absorption lines (discrete spectrum)
Absorption lines for air, under indirect illumination, so that the gas is not directly between source and detector. Here, Fraunhofer lines in sunlight and Rayleigh scattering of this sunlight is the "source." This is the spectrum of a blue sky somewhat close to the horizon, looking east with the sun to the west at around 3–4 pm on a clear day.
A spectral line is a weaker or stronger region in an otherwise uniform and continuous spectrum. It may result from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies. Spectral lines are often used to identify atoms and molecules. These "fingerprints" can be compared to the previously collected ones of atoms[1] and molecules,[2] and are thus used to identify the atomic and molecular components of stars and planets, which would otherwise be impossible.
^Kramida, Alexander; Ralchenko, Yuri (1999), NIST Atomic Spectra Database, NIST Standard Reference Database 78, National Institute of Standards and Technology, retrieved 2021-06-27
A spectralline is a weaker or stronger region in an otherwise uniform and continuous spectrum. It may result from emission or absorption of light in...
Spectralline shape or spectralline profile describes the form of an electromagnetic spectrum in the vicinity of a spectralline – a region of stronger...
A spectral color is a color that is evoked by monochromatic light, i.e. either a spectralline with a single wavelength or frequency of light in the visible...
Least-squares spectral analysis List of spectroscopists Metamerism (color) Operando spectroscopy Scattering theory Spectralline ratios Spectral power distribution...
intensity in an experiment can be challenging, the ratio of different spectralline intensities can be used to achieve information about the plasma, as...
The hydrogen line, 21 centimeter line, or H I line is a spectralline that is created by a change in the energy state of solitary, electrically neutral...
Linespectral pairs (LSP) or linespectral frequencies (LSF) are used to represent linear prediction coefficients (LPC) for transmission over a channel...
output of a pulse height analyzer for characteristic features such as spectralline, edges, and various physical processes producing continuum shapes Multispectral...
Spectral is a 2016 Hungarian-American military science fiction action film co-written and directed by Nic Mathieu. Written with Ian Fried & George Nolfi...
atomic physics, is one of a set of six named series describing the spectralline emissions of the hydrogen atom. The Balmer series is calculated using...
spectral bands refer to the electromagnetic emission of polyatomic systems, including condensed materials, large molecules, etc. Each spectralline corresponds...
2019 by Ge and colleagues which utilizes the C IV emission line, an alternative spectralline to Hβ, using the same data reproduced by the earlier paper...
instruments: broadband continuum receivers and heterodyne detection spectralline receivers. Continuum emission is a tracer of star formation in other...
and excimer lasers), each of which resonates and amplifies a single spectralline. Krypton fluoride also makes a useful laser medium. From 1960 to 1983...
(/ˈzeɪmən/; Dutch pronunciation: [ˈzeːmɑn]) is the effect of splitting of a spectralline into several components in the presence of a static magnetic field....
The equivalent width of a spectralline is a measure of the area of the line on a plot of intensity versus wavelength in relation to underlying continuum...
the helium spectralline during the solar eclipse of 1868, while Lockyer observed it from Britain. However, only Lockyer proposed that the line was due to...
Free spectral range (FSR) is the spacing in optical frequency or wavelength between two successive reflected or transmitted optical intensity maxima or...
Spectral imaging is imaging that uses multiple bands across the electromagnetic spectrum. While an ordinary camera captures light across three wavelength...
of data transfer, bit rate or throughput Spectral linewidth, the width of an atomic or molecular spectralline Bandwidth may also refer to: Bandwidth (linear...
which they called "Ångström", based on the wavelength of a specific spectralline. It was only in 1960, when the metre was redefined in the same way,...
atomic physics, the Rydberg formula calculates the wavelengths of a spectralline in many chemical elements. The formula was primarily presented as a...
proposed them in 1916. In physics, one thinks of a spectralline from two viewpoints. An emission line is formed when an atom or molecule makes a transition...
state. This gives a stronger spectralline. However, there are other factors that influence the intensity of a spectralline, such as whether it is caused...
is only one spectralline of a singlet state. In contrast, a doublet state contains one unpaired electron and shows splitting of spectral lines into a...
typically being black-body radiation and spectral band emission, with both spectralline emission and spectralline absorption playing smaller roles. In the...
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