Tyndall, John, 1820-1893 · New York : Appleton · leaf 203
ss, 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. Draw-ing gently a bit of resined leather over the rod near a, itis thrown into longitudinal… … bration is so intense, that the ball is rejected with vio-lence whenever it comes into contact with the end of therod. § 5. Fracture of Glass Tube by SonorousVibrations. When the wetted cloth is passed over the surface ofa glass tube the film of liquid left behind by the clothis seen forming narrow…
Sound
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