A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 205
refracting angle,see D in Fig. 128. The greater this angle is, other things being equal, thegreater the total deflection will be. We have seen in § 155that if the two faces are parallel the total deviation is zero. 2d, On the color of the ray. This fact has already been noticed. Red light is… … FIG 129 IE, Fig. 129, which makes the distance A I equal the dis-tance AE, and makes the refraction equally great at bothsurfaces. REFRACTION OF LIGHT. 183 EXPERIMENT. Repeat the experiment of § 112, varying the angle at which thesunlight strikes the first face, in order to show that there is one…
Physics
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