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I'm guessing few on this board have heard an uktrasonicator in action.

I just showed to article to my mate, and he enthusiastically said we'll brew some... as soon as we leave the lab to break for lunch

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> heard an uktrasonicator

Is this a joke?

No. These machines sound like robot hornets operating dental drills.

I thought ultra sonic was defined as being above the sonic range of humans. Genuine question: why would an ultrasonic noise generator create sound audible frequencies? Can it not provide enough power without doing so?

Ultrasonicators for the purpose of cavitation research are insanely powerful and non linear material response cause all sorts of vibrational modes to boom.

Its unpleasant.

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