Sentence Examples


  • The indirect method is based upon the observed constant of aberration or the displacement of the stars due to the earth's motion.
  • Since then, two elaborate series of observations made with the zenith telescope for the purpose of determining the variation of latitude and the constant of aberration have been carried on by Professor C. L.
  • In general, we may say that aberration is unimportant when it nowhere (or at any rate over a relatively small area only) exceeds a small fraction of the wavelength (X).
  • Thus in estimating the intensity at a focal point, where, in the absence of aberration, all the secondary waves would have exactly the same phase, we see that an aberration nowhere exceeding 4X can have but little effect.
  • The aberration is here unsymmetrical, the wave being in advance of its proper place in one half of the aperture, but behind in the other half.

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