Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 278
REFRACTION AND DISPERSION OF LIGHT. 269 Experiment 4. Drop a small coin into a cup and place the eye in sucha position that it is just hidden by the edge of the cup.Keeping the relative positions of the cup and the eye unaltered,pour water into the cup. … Explain why the coin is now visible, and make a drawing toshow the directions of the rays by which it is seen. The sun is visible to us in the evening when it is inreality below the horizon; because the light whichcomes from it is refracted in passing into and throughthe atmosphere, which increases…
Physics
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