Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 215
n from each or a rarefaction from each, arrivesat the same time, the action on the ear-drum will be increasedand the sound will be louder. Consider the curves in Fig. 239. Between A and B are 8complete waves, and between G and D, taking up the same distance, are 9 waves.At the beginning at Aand C,… … Fig. 239.—lUu.strating the production of beats. Thecombin..tion of ^B with CD gives EF. The dottedcurve in AB\s the same as the curve CD. At M themotion is uji, at N it is down, and these added giveus motion as at P. CD we oDtani bta those represented inby EF. These curves can represent the motions…
Physics
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