Anatomy and physiology of the eye, with hints for the preservation of the eyesight (1901)
Herbert, John Frederick, 1860- · Philadelphia, Pa., The author · leaf 53
n parallel lines, 47 and they are supposed to enter the eye as such. Rays oflight coming from an object which is nearer than twentyfeet to the observer are regarded as proceeding from thatpoint in lines which diverge, therefore fall upon the e^e asdivergent rays of light; the nearer the object the… … Figure 28. Refraction.—(Left-hand figure). When a ray of light strikes a transparentobject vertically, it passes directly through the same without being deviatedin the least. The incident ray, I, meeting with a pkUe of glass is bent towardthe vertical, and the refracted ra>-, R, passing from the…
Eye · Lenses
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