Barton, Edwin H. (Edwin Henry), b. 1858 · London, Macmillan and Co., limited · leaf 183
owed by arise to the final steady state. When n is not equal to q, as 164 SOUND CHAP. IV in article 106 (except when the initial conditions makea = 0), beats must occur. Under these circumstances wehave at first repeated waxings and wanings of amplitude.These, however, die away, leaving finally the… … Fig. 43a. vibrations may easily be called to mind or readily devised.Of these two will be noticed here, others will occur later. Expt. 21. Bough Illustrations of Forced Vibrations.—Froma slightly stretched horizontal cord about a metre long,preferably of india-rubber about half a centimetre…
Sound
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