Page:Popular Science Monthly Volume 3.djvu/15

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5
WAVE-ACTION IN NATURE.
Fig. 4.
PSM V03 D015 Figures of vibrating plates.jpg
Chladni's Figures of Vibrating Plates.

that to the third, and so on, while the last ball only of the row flies away. The balls being elastic, the first one struck is not pushed from its position, but is slightly compressed, and then expanding it compresses the second, which, again expanding, compresses the third; and so there is propagated a series of compressions and expansions