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 109
a dense to a rare medium, theywill be refracted from the perpendicular. Thus, in the Eig.21 diagram (fig. 21) ABare rays of light pass-ing in a parallel direc-tion through glass, to-ward the convex sur-face F B G. B H areradii prolonged fromthe centre 0, perpendicular to the curved surface at… … OPTICAL PRINCIPLES. 91 be exactly the same as that of the first, the oppositedirection of their surfaces being counterbalanced by thedifferent conditions of the refraction. Hence the focusor point of convergence of the rays, in a double convexlens, will be just half the length of that of a…
Anatomy, Comparative · Dissection · Microscopy
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