Spectra is valid Scrabble Word

Definitions for SPECTRA in dictionary:

NOUN:
• SPECTRUM, an array of the components of a light wave
• a band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.
• the entire range of wavelengths of electromagnetic radiation.
• a characteristic series of frequencies of electromagnetic radiation emitted or absorbed by a substance.
• the components of a sound or other phenomenon arranged according to such characteristics as frequency, charge, and energy.
• used to classify something in terms of its position on a scale between two extreme points
• a wide range
OTHER DEFINITIONS:
• a pl. of spectrum

Words related to SPECTRA

spectrum14 spectrums15

Words that contain SPECTRA

spectral12 spectrally17 spectrality18 nonspectral15 spectralness16 multispectral19 spectralities17 spectralnesses18

How to use SPECTRA in a sentence

• An atlas of stellar spectra with an outline of spectral classification.
• An atlas of stellar spectra with an outline of spectral classification, by W.
• We may thus observe three principal absorption spectra.
• A special photographic investigation will also be undertaken of the spectra of the banded stars, and of the ends of the spectra of the bright stars.
• Our methods of enlargement have been considered, and some of them tried, with the object of removing the irregularities of the original spectra without introducing new defects.
• The spectra of all stars of the sixth magnitude and brighter will generally be found upon these plates, except in the case of red stars.
• A study of the photographic brightness and distribution of the light in the spectra will also be made.
• In one case, over three hundred spectra are shown on a single plate.
• The most promising method of determining the wave lengths of the stellar spectra is to interpose some absorbent medium.
• A tank containing one of these materials is interposed and the spectra photographed through it.
• The approximate wave lengths can readily be found from a comparison with the solar spectrum, a sufficient number of solar lines being present in most stellar spectra.
• If two colors of the spectra are, by suitable arrangement, brought exactly in line, then the others will be out.
• The spectra of these, as of the great cluster, resemble the solar spectrum, being continuous, though, of course, very much fainter.
• The spectra of the stars likewise testify to the universality of our concepts in chemistry.
• Having noticed some unknown lines in the spectra of certain salts he was examining, he set to work to obtain the substance or substances to which these were due.
• Just before the war Russell showed that our old methods of classifying the stars according to their spectra must be radically changed.
• The pinnacle is reached in the intensely hot white stars of the helium class, in whose spectra the lines of this gas are very conspicuous.
• But the spectra both from planets and stars have, in this instance, all undergone the same change.
• Considering the infinite variety of light, and its easy modification and absorption, we should expect an immense number of spectra.
• CHROMOLITHIC PLATE of spectra of metals, to face 50.
• The third great advance in astronomy is in photographing the spectra of the stars.
• As the inquiry proceeded, it was found, however, that the agreement in the lines of different spectra was not perfect.
• This nerve force goes out into the ether, and there obeys the laws that govern light, being broken into spectra, etc.

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