Sentence Examples


  • The two most customary eyepieces consist in two simp:e planoconvex lenses, whose distance one from the other is equal to half the sum of the two focal lengths.
  • In both eyepieces micrometers or cross-wires are used for measuring in the plane of the real FIG.
  • These eyepieces are intentionally provided with a different chromatic magnification, which however is in opposition to that originating in the objective.
  • These eyepieces are very convenient in use, for when they are changed the lower focus always falls in about the same plane.
  • In German and French microscopes the optical length of the tube, when apochromats and compensation-eyepieces are used, is 180 mm.
 

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