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- Path: sparky!uunet!usc!elroy.jpl.nasa.gov!nntp-server.caltech.edu!allenk
- From: allenk@ugcs.caltech.edu (Allen Knutson)
- Newsgroups: sci.physics
- Subject: Re: can sound waves boil water?
- Date: 22 Dec 1992 18:45:37 GMT
- Organization: California Institute of Technology, Pasadena
- Lines: 9
- Message-ID: <1h7nohINNjgu@gap.caltech.edu>
- References: <1992Dec22.151439.29874@nuscc.nus.sg>
- NNTP-Posting-Host: torment.ugcs.caltech.edu
-
- This isn't really relevant to the original question (which is why I haven't
- quoted it), but it amused me to read about, so I'll share it with the net.
- A friend of mine found in our Hovse Library a several-decade-old article on
- effects associated to very high frequency sound in water. For one thing,
- it would injure fish. Nonetheless, the scientists stuck their hands in the
- water to feel for themselves, and at lower (less painful) intensities, found
- a series of boundary layers, evenly spaced every couple of centimeters,
- that were hard to push through. (No doubt someone will repost with bounds
- on the frequency used.) Allen K.
-