The microscope; an introduction to microscopic methods and to histology (1917)
Gage, Simon Henry, 1851-1944 · [Ithaca, N.Y.] The Comstock Pub. Co. · leaf 142
that fortwo points to appear as two a visual angle of 1 minute is necessary,the diameter in millimeters or inches of the object, or the separationof the two points to render them visible as two, is easily determinedas follows: The nodal point or optic center of the eye is considered to be atthe… … Fig. 76. Constant Size of Object, the Vis-ual Angle and the Retinal Image Varyingwith the Distance. R I The retinal image varying inversely asthe distance of the object. V A The visual angle varying with the dis-tance of the object from the eye. Object The object of constant size but…
Microscopy · Microscopy -- Technique
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