I believe devices which use this principle are called Venturi gauges.
I had forgotten that little bit of trivia; it may help me to find some
info.  Thanks!

Mike H.

PS- For Peter, this air puff is used for stimulus in nerualogical
conditioning.

> > Is that Bernoulli or Venturi?
>
>Bernoulli is the guy that the "Bernoulli prinicple" is named for.  A
>venturi
>is a device designed to capitalize on this principle in a specific way.
>I'm
>not sure where the name "venturi" comes from.
>
>
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