Wright, Mark R., 1854- · London : Longmans · leaf 248
Fig. 241. hole in front; the crystalline lens is represented by a hand convex lens L,placed behind the cornea (see fig. 242, and compare fig. 112). Fill boxwith water, place in front of cornea a lighted candle, and obtain image on … Fig. 242. the roughened glass (the retina). One of the pieces of blackened tin, D,with circular aperture, represents the iris. Place concave and convexspectacle-glass in turn in front of cornea, and note how the position ofroughened glass must be altered. 240 Appendix MAGNETISMA Piece of loaestone.…
Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
