Sentence Examples


  • Our eyes are capable of seeing only a narrow spectrum of light.
  • The spark spectrum of gold has been mapped by A.
  • Let us suppose that the light is incident perpendicularly, and that the grating interval increases from the centre towards that edge which lies nearest to the spectrum under observation, and decreases towards the hinder edge.
  • Mag., 1837, 10, p. 364) was that any ray which suffered in traversing the plate a retardation of an odd number of half wave-lengths would be extinguished, and that thus the spectrum would be seen interrupted by a number of dark bars.
  • It is necessary that the aperture of the pupil be accommodated to the angular extent of the spectrum, or reciprocally.