Acoustics & Sound For Musicians - Online Book
The Theory Of Sound Which Constitutes The Physical Basis Of The Art Of Music.
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I. §12.] CONSTRUCTION OF WAVE-FORM. |
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each one-sixteenth of a second : 16 coincides with 0, as the particle has returned to its starting-point.
Next, select a series of particles originally at rest in equidistant positions along the initial line, and so situated that each commences a vibration identical with that above laid down in Fig. 11 one-sixteenth of a second after the particle to the left of it has started on an equal vibration. Fig. 12 shows the rest-positions of the series of particles
 in the initial line, and their contemporaneous positions
 during a subsequent vibration. |
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The moment selected for the figure is that in which the first of the series, a0, is on the point of moving vertically upwards out of the initial line. |
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