Tyndall, John, 1820-1893 · New York : Appleton · leaf 141
long, morethan six inches across at its widest part, and shining witha kind of pearly lustre. The stretching force at the pres-ent moment is such that the string swings to and fro as awhole, its vibrations being executed in a vertical plane. Relaxing the string gradually, when the proper tensionhas… … relaxed still further, it divides into three vibrating parts.Slackening it still more, it divides into four vibrating parts.And thus we might continue to subdivide the string intoten, or even twenty ventral segments, separated from eachother by the appropriate number of nodes. When white-silk…
Sound
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