Anatomical manipulation, or, The methods of pursuing practical investigations in comparative anatomy and physiology : also an introduction to the use of the microscope, etc., and appendix (1844)
Tulk, Alfred, d. 1891, Henfrey, Arthur, 1819-1859 · London : Van Voorst · leaf 112
ge is the result.This is what is termed spherical aberration. Lenses ofother curvature than spherical have been proposed inorder to get rid of this error, but the difficulties in theway of manufacturing such, caused the idea to beabandoned. 155. The v/ay in which common simple lenses ofhigh power… … 94 CHROMATIC DISPERSION. being a plate with a small circular aperture. By thismeans a certain amount of defining power is obtained,but it is only at the expense of light and penetration;that is, as the aperture is diminished the number ofpencils of rays is proportionately reduced, and this…
Anatomy, Comparative · Dissection · Microscopy
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