Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
373. Figure 5.—Reflection of parallel rays.—In accord-ance with the same law, parallel rays before reflection will be parallelafter reflection, as illnstrated by the diagram. 373. Figure 6.—Convex, plane, and concave mirrors.— A ray of light from the lamp, T, falling npon the point, H, of theplane… … being perpendicular to all three of the mirrors at the point, H, thesame ray, TH, in accordance with the second law of reflection, wouldbe reflected to the same point, L, by each of the three mirrors. OPTICS. 207 374- Figure 7.—The intensity of reflected light increaseswitli the iiiagnitiule of the…
Physics · Astronomy
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