OPTICAL OUTLINES. 19 lion of the rays is not changed by a prism ; if parallel or divergent before incidence, they are parallel or similarly divergent after emergence, Fig. 3. Fig. 2. … Refraction by a prism. 6. An object seems to lie, or is “ iDrojected,” in the direc¬ tion which the rays have as they enter the eye; ob, Fig. 3, seen by an eye at a' or b' , seems to be at o' b, where it would be if the rays a' b' had undergone no deviation. remains the sam(0for varying angles of…
Eye—Diseases · Color blindness · Eye Diseases · Color Vision Defects
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