Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 24
s may be rudely represented by the propa-gation of motion through a row of glass balls, such as areemployed in the game of solitaire. Placing the ballsalong a groove thus, fig. 1, each of them touching itsneighbour, and urging one of them against the end of therow ; the motion thus imparted to the… … turning itself to rest. The last ball only of the row fliesaway. In a similar way is sound conveyed from layer tolayer through the air. The air which fills the externalcavity of the ear is finally driven against the tympanicmembrane, which is stretched across the passage leadingfrom the external…
Sound
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