The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 19
hin the principal focus. A3B3. The virtual image on the same side of the lensas the object. It is indicated with dotted lines, as ithas no actual existence. B- A-. Retinal image of the object (A1 B1). Thevirtual image is simply a projection of the retinalimage in the field of vision. Axis. The… … CH. /] MICROSCOPE AND ACCESSORIES Hold the simple microscope directly toward the sun and move itaway from and toward a piece of printed paper until the smallestbright point on the paper is obtained. This is the burning pointor focus, and as the rays of the sun are nearly parallel, the burningpoint…
Microscopy
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