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From: gardner@uxc.cso.uiuc.edu.UUCP
Newsgroups: sci.electronics
Subject: Re: Ultrasonic humidifiers
Message-ID: <171900001@uxc.cso.uiuc.edu>
Date: Tue, 17-Feb-87 17:22:00 EST
Article-I.D.: uxc.171900001
Posted: Tue Feb 17 17:22:00 1987
Date-Received: Thu, 19-Feb-87 20:43:18 EST
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Nf-From: uxc.cso.uiuc.edu!gardner    Feb 17 16:22:00 1987


Ultrasound form focused transducers operating at similiar frequencies have been
used as an experimental cancer treatment.  By focusing the power, you can go
through the skin and "cook" the tissue below.  I've seen these transducers
operate just in a tank of water, and they can literally boil the water
at the focal point with enough power applied.  I don't believe that is quite
how the himidifier types work, but your sure transfer a lot of energy to the
water.
mgg