The result is a mosaic of spectra, covering up to 60 different regions.
It is also a defect that the definitions do not directly give quantitative characteristics of the spectra.
With 188 Illustrations and a table of spectra in Chromo-lithography.
The spectra of the stars likewise testify to the universality of our concepts in chemistry.
Their spectra show a complexity of helium and hydrogen bands.
Now, by comparing their spectra can we not be led to distinguish a particular quality, and grasp the idea of it?
The spectra of all the Algol variables are of the first or Sirian type.
Even the spectra of these elements seem to be identical so far as known.
The problem to solve is how to utilize these two spectra now we have got them.
One of the spectra had dark lines and the other bright lines.
1610s, "apparition, specter," from Latin spectrum "appearance, image, apparition," from specere "to look at, view" (see scope (n.1)). Meaning "band of colors formed from a beam of light" first recorded 1670s.
spectrum spec·trum (spěk'trəm)
n. pl. spec·trums or spec·tra (-trə)
The distribution of a characteristic of a physical system or phenomenon, especially the distribution of energy emitted by a radiant source arranged in order of wavelengths.
The color image presented when white light is resolved into its constituent colors: red, orange, yellow, green, blue, indigo, violet.
The plot of intensity as opposed to wavelength of light emitted or absorbed by a substance, usually characteristic of the substance and used in qualitative and quantitative analysis.
The distribution of atomic or subatomic particles in a system, as in a magnetically resolved molecular beam, arranged in order of masses.
The group of pathogenic organisms against which an antibiotic or other antibacterial agent is effective.
Plural spectra (spěk'trə) or spectrums