Sentence Examples


  • In the spectra of the alkali metals each line of the trunk is a doublet, and we may speak of a twin trunk springing out of the same root.
  • Doublet lens.
  • Young, according to which the dark line observed in the centre of each component of the sodium doublet in a Bunsen burner is transparent to a radiation placed behind.
  • Tretis, or treitis, is a doublet of "treaty," which also meant a discourse or account.
  • A doublet is any class which possesses a member x such that the modified class formed by all the other members except x is a unit class.