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 113
pencils of rays is proportionately reduced, and this re-duction of their quantity prevents the surfaces of objectsfrom being properly seen. The single lens having the least spherical aberrationis a double convex, having the radii as 1 to 6, with itsmost convex face turned toward parallel rays. 156.… … fig. 29 will illus-this. Parallelrays of light, A B, fall-ing on a convex lenswill be decomposed, asin the spectrum formedby a prism, but in aless degree ; the violet, the most refrangible rays beingbrought to a focus at C, somewhat nearer the lens thanthe principal focus, while the red rays on the…
Anatomy, Comparative · Dissection · Microscopy
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