spectral line
noun
: one of a series of linear images formed by a spectrograph or similar instrument and corresponding to a narrow portion of the spectrum of the radiation emitted or absorbed by a particular source
Examples of spectral line in a Sentence
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Today many astronomical spectrographs are calibrated using the spectral lines emitted by thorium argon lamps, which have irregular lines that vary widely in brightness and spacing and shine on only a small fraction of the CCD cells in a detector.
—
IEEE Spectrum, 30 Dec. 2011
Unfortunately, the data was unclear because of its low resolution; spectral lines that identified the presence of water were blurred.
—Elizabeth Rayne, Ars Technica, 28 Nov. 2023
Within a year of Herschel’s launch, astronomers began noticing that something in interstellar space was absorbing far-infrared light at a wavelength of 485 microns, a spectral line that hadn’t been observed before.
—Ken Croswell, Discover Magazine, 12 Dec. 2019
Ferrara finds some evidence to support the model: The JWST spectrum of one distant galaxy, GNz-11, had one spectral line—for hydrogen gas—shifted out of place as if the gas was moving at 300 kilometers per second.
—Bydaniel Clery, science.org, 28 Mar. 2023
To this day no one has ever detected any helium hydride in the early universe; that would require the unprecedented feat of looking across more than 13 billion light-years of space to the dawn of time and discerning the faint spectral line that the molecule produces.
—Ken Croswell, Discover Magazine, 12 Dec. 2019
After all, astronomers had been seeing that same 485-micron spectral line elsewhere.
—Ken Croswell, Discover Magazine, 12 Dec. 2019
His team also recognized that a red spectral line which supposedly arose from oxygen is actually a blend of oxygen and nickel; subtracting nickel’s contribution led to a lower oxygen abundance.
—Ken Croswell, Scientific American, 1 July 2020
At the same time, the spectral lines became objects of mathematical interest.
—Quanta Magazine, 20 Mar. 2018
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IEEE Spectrum, 30 Dec. 2011
Unfortunately, the data was unclear because of its low resolution; spectral lines that identified the presence of water were blurred.
—Elizabeth Rayne, Ars Technica, 28 Nov. 2023
Within a year of Herschel’s launch, astronomers began noticing that something in interstellar space was absorbing far-infrared light at a wavelength of 485 microns, a spectral line that hadn’t been observed before.
—Ken Croswell, Discover Magazine, 12 Dec. 2019
Ferrara finds some evidence to support the model: The JWST spectrum of one distant galaxy, GNz-11, had one spectral line—for hydrogen gas—shifted out of place as if the gas was moving at 300 kilometers per second.
—Bydaniel Clery, science.org, 28 Mar. 2023
To this day no one has ever detected any helium hydride in the early universe; that would require the unprecedented feat of looking across more than 13 billion light-years of space to the dawn of time and discerning the faint spectral line that the molecule produces.
—Ken Croswell, Discover Magazine, 12 Dec. 2019
After all, astronomers had been seeing that same 485-micron spectral line elsewhere.
—Ken Croswell, Discover Magazine, 12 Dec. 2019
His team also recognized that a red spectral line which supposedly arose from oxygen is actually a blend of oxygen and nickel; subtracting nickel’s contribution led to a lower oxygen abundance.
—Ken Croswell, Scientific American, 1 July 2020
At the same time, the spectral lines became objects of mathematical interest.
—Quanta Magazine, 20 Mar. 2018
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“Spectral line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spectral%20line. Accessed 27 Feb. 2025.
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