Tyndall, John, 1820-1893 · London : Longmans, Green · leaf 157
istedstraw ; hence the name straw-fiddle, sometimes appliedto this instrument. Chladni informs us that it isintroduced as a play of bells (Griockenspiel) intoMozarts opera of The Zauberflote. If, instead of barsof wood, we employ strips of glass, we have the glassharmonica. § 5. Vibrations of a… … steel bar, with the nodal points corresponding to its firstmode of division marked by the transverse dots. Let thebar be bent to the form h h; the two nodal points still re-main, but they have approached nearer to each other.The tone of the bent bar is also somewhat lower than thatof the straight…
Sound
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