Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 79
when these wavesenter the air theybecome morecurved (see BC,Fig. 118) becausethe parts which en-ter the air firsttravel faster and getahead of the partsstill in water. Now your eye Fig. 117. The coin appears closer to you than it is estimates the dis-tance of an object partly by the curvature of…
Light · Scientific recreations
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