Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 92
Fig. 136. A right-angled prism GILBERT LIGHT EXPERIMENTS 89 clouds which passes from the upper cold air through warmerand warmer lower layers. It is refracted and finally totally re-flected and the clouds look like a lake of water on the ground.Sunset and Sunrise. You see the sun before it is up and … Fig. 138. Why you see the sun before it rises and after it has setFrom Appletons School Physics, published by the American Book Co. after it has set because light from it is refracted by successivelayers of air which are denser the nearer they are to theearth. The direct ray SD, Fig. 138, could not…
Light · Scientific recreations
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