The microscope : and its application to vegetable anatomy and physiology / by Dr. Hermann Schacht ; edited by Frederick Currey, M. A.

  • Hermann Schacht
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: The microscope : and its application to vegetable anatomy and physiology / by Dr. Hermann Schacht ; edited by Frederick Currey, M. A. Source: Wellcome Collection.

    35/230 (page 11)
    ferent refractive and dispereive ])owers, the aberration i.s so far diminished that achromatism is practically pi'oduced. The difference of the deviations of any two rays of the sj)ec- tmm divided by the mean deviation, is called the dispersive power of the medium for those rays.