Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 197
nto intensevibration by the passage of a resined bow across its edge.You hear its sound, but it is not very forcible. When,however, the open mouth of a large tube, closed at oneend, is brought close to one of the vibrating segments ofthe bell, the tone swells into a musical roar. As the tubeis… … brought near the vibratmg cell, the resonance is feeble.On lengthening the tube by drawing out the slider, at acertain point the tone swells out as before. If the tube bemade longer, the resonance is again enfeebled. Note thefact, which shall be explained presently, that the opentube which gives…
Sound
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