Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 35
JUL written d p • in full it is therefore w = Having thus traced a ray•experimentally through aprism, our next step is to showthat a convex lens is only acurved form of tioo such prismswith their bases in contact,.as is shown in A, fig. 6,where the curved line showsthe lenticular character andthe… … i ! . i ■ ■ - _ V J i
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