Sentence Examples

  • The heavy door opened with a grating sound.
  • Rutherfurd introduced into common use the reflection grating, finding that speculum metal was less trying than glass to the diamond point, upon the permanence of which so much depends.
  • The grating iron door made him jump.
  • This is the ordinary formula for a reflecting plane grating, and it shows that the spectra are formed in the usual directions.
  • He has also shown how to rule a plane surface with lines so disposed that the grating shall of itself give well-focused spectra.