Sentence Examples


  • The heavy door opened with a grating sound.
  • He has also shown how to rule a plane surface with lines so disposed that the grating shall of itself give well-focused spectra.
  • This is the ordinary formula for a reflecting plane grating, and it shows that the spectra are formed in the usual directions.
  • In spite of the many improvements introduced by Rowland and of the care with which his observations were made, recent workers have come to the conclusion that .errors of unexpected amount have crept into his measurements of wave-lengths, and there is even a disposition to discard the grating altogether for fundamental work in favour of the so-called " interference methods," as developed by A.
  • 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.
 

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