Tyndall, John, 1820-1893 · New York : Appleton · leaf 234
f India-rubber. He closed the open end of a glass tubeby two strips of this substance, leaving a slit betweenthem. On urging air through the slit, the bands werethrown into vibration, and a musical tone produced.Helmholtz recommends the form shown in Fig. 108, wherethe tube, instead of ending in a… … 2526 SOUND.
Sound
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