- #1
spareine
- 129
- 39
I recorded the sound spectra of a singing wineglass (rubbed the rim with a wet finger) and a pinging wineglass (tapped anywhere at its wall) with a smartphone. Evidently the fundamental tones of both vibrations are identical, but the overtones are very different (harmonic vs. anharmonic). As the fundamental tones are identical it seems fair to assume that the singing and the pinging vibrations have a lot in common. Then why is pinging unable to excite the singing-overtones, and vice versa?
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