Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 187
instrument which will illustrate thisaction. A rod of brass, a b, fig. 85, is held at its centreby the clamp, s, while an ivory ball, suspended by twostrings from the points, m and n, of a wooden frame, iscaused to rest against the end, b, of the brass rod. Drawinggently a bit of resined leather… … still more briskly. The ball, 6, rattles, and now thevibration is so intense, that the ball is rejected withviolence whenever it comes into contact with the end ofthe rod. § 5. Fracture of Glass Tube by SonorousVibrations,When the wetted cloth is passed over the surface ofa glass tube the film of…
Sound
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