Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 330
irection, the number which will enter tho cyofrill oe hmited by the size of the pupil. At a great distance from an object,at will be seen in Fig. 2G5, few rays will enter the eye; but if, as in Fig. 2G6,we place before the eye a convex lens of moderate size, a large number ofthe diverging rays will… … Fig. 266. In like manner a concave mirror, by causing divergent rays which fal)upon the surface to become convergent, may be used to produce the same ef-fect, as is shown in Fig. 267. Ftc. 2G7.
Physics · Science · Technology
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