Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 338
t is totally reflected from side to side. The lightimprisoned within the jetgives the water the appear-ance of liquid fire. Colouredglasses may be inserted at D,and beautify the effect. 376. Atmospheric Refrac-tion. As we ascend in theatmosphere its density graduallydiminishes, and hence a ray of… … Fig. 375. — Showing how the atmospherechanges the apparent position of a heavenlybody. 328 REFRACTION direction of the plumb-line. Z is then the observers zenith,Tlie plane through A, at right angles to A^Z, is the horizon. Astar at Z will appear in its proper direction since the lightfrom it…
Physics
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