The microscope; an introduction to microscopic methods and to histology (1899)
Gage, Simon Henry, 1851-1944 · Ithaca, N. Y., Comstock publishing company · leaf 26
point. A B. Object outside the principal fo-cus. B A. Real, enlarged image onthe opposite side of the lens. Axis. Principal optic axis. 1, 2, 3.Rays after traversing the lens. Theyare converging, and consequently forma real image. The dotted line and theline (2) give the direction of the raysas if… … 14. 15- A B. The object placed between the lens and its focus; A/ B virtual imageformed by tracing the rays backivard. It appears on the same side of the lens asthe object, and is erect (? 0). A a is. The principal optic axis of the lens. F. The principal focus. /, 2, 3. Rays from the point B of…
Microscopy -- Technique
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