Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 267
Fig. 202. the opaque body B, and the portion of the divergingcone on the side of B opposite from A will be in shadow. … Fig. 203. If the luminous body A is larger than the body B, thecones will be as shown in Fig. 203. A screen a b placed Fig. 204. behind B will be cut by both cones, and a shadow (Fig.204) consisting of an umbra and a penumbra will beprojected on it. NATURE AND PROPAGATION OF LIGHT. 259 QUESTIONS.…
Physics
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