Spectra Spectre

Spectral

Meanings and phrases

spectral

Pronunciation American British Australian Indian
adj.
  1. of or relating to a spectrum
  2. resembling or characteristic of a phantom; apparitional; ghostlike; ghostly; phantasmal; spiritual

spectral color

Pronunciation American British Australian Indian
n.
  1. a color that has hue; chromatic color; chromatic colour; spectral colour

spectral colour

Pronunciation American British Australian Indian
n.
  1. a color that has hue; chromatic color; chromatic colour; spectral color

spectral type

Pronunciation American British Australian Indian
E.g.
  • The star's spectral type is therefore written as .
  • Delta Muscae has a listed spectral type of K2III.
  • Lambda Muscae has a listed spectral type of A7V.

spectral lines

Pronunciation American British Australian Indian
E.g.
  • They observed spectral lines which they presumed to be of eka-caesium.
  • The color results from spectral lines at 455.4, 493.4, 553.6, and 611.1 nm.
  • Close examination of the spectral lines reveals that some display a fine structure splitting.

spectral class

Pronunciation American British Australian Indian
E.g.
  • Its spectral class is B8 and it has a luminosity of .
  • Its spectral class is K1 and its absolute magnitude is 0.0.
  • Its spectral class is F2 and its absolute magnitude is 0.6.

spectral sequence

Pronunciation American British Australian Indian
E.g.
  • Then, the spectral sequence reads as but with different differentials.
  • The Atiyah–Hirzebruch spectral sequence can be used to compute twisted K-theory groups as well.
  • This gives a computationally tractable spectral sequence for computing the rational bordism groups.
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