spectral index

collocation in English

meaningsofspectralandindex

These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withindex.
spectral
adjective
uk
/ˈspek.trəl/us
/ˈspek.trəl/
coming from or seeming to be the spirit of a ...
See more atspectral
index
noun
uk
/ˈɪn.deks/us
/ˈɪn.deks/
an alphabetical list, such as one printed at the back of a book showing which page a subject, name, etc. ...
See more atindex

(Definition ofspectralandindexfrom theCambridge English Dictionary© Cambridge University Press)

Examplesofspectral index

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
This rarefaction region can significantly change the cosmic-rayspectralindex, as we now discuss.
From theCambridge English Corpus
Hence, in transforming between the wavenumber and frequency spectra h(k) and g(), thespectralindexof a power-law spectrum is preserved.
From theCambridge English Corpus
Thespectralindexof a source can hint at its properties.
From
Wikipedia
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The wings are also observed to have a higherspectralindexthan the active lobes and are highly polarized.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
If this distribution would have the samespectralindexalso at lower energies, flares, micro-flares and nanoflares might provide a considerable part of coronal heating.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
A narrow-wavebandspectralindexthat tracks diurnal changes in photosynthetic efficiency.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Note that if flux does not follow a power law in frequency, thespectralindexitself is a function of frequency.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
A comprehensive and rigorous analysis was carried out to identify the spectral bands and spectral indices for accurate retrieval of leaf total chlorophyll and nitrogen concentrations of cotton crop.
From theCambridge English Corpus
There are others that report the spectral indices near 3/2.
From
Wikipedia
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Number of recent simulations report the spectral indices to be closer to 5/3.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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