Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 109
106 GILBERT BOY ENGINEERING … i 2 Fig. 162. Parallel wave3 and rays are converged in 1 and the rays in 2. This explains why these lenses con-verge the light. When parallel waves fall on a diverging lens, which is thinnerat the center than at the edges, the portions which go throughthe center are less delayed than the portions…
Light · Scientific recreations
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