Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 207
°,or the refracted ray must pass within the surface. Thisis Total Reflection, and the ray obeys the laws of reflection. 690. Mirage. A phenomenon sometimes seen in sandy desertregions, called Mirage, results from refraction and total reflection.Fig. 224. The heated sand expands the lower layers of… … Fig. 224*critical angle and is totally reflected. The ray then reaches theeye of the observer, who sees the object in the direction in whichthe light is moving when it reaches his eye. The object is there-fore inverted, and appears as though reflected by distant water. The above explanation…
Physics
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