[pianotech] re.:Bladeless fan

Ron Nossaman rnossaman at cox.net
Sun Jun 20 11:43:39 MDT 2010


Don Mannino wrote:

> But the flutter effect from the sound bouncing off of a spinning fan (which
> I think is what you are referring to) would certainly be eliminated, so I
> agree it would be interesting.  

Yes, that's a Doppler shift from echoes off moving blades.


>I'd like one to keep me cool on the warm
> summer nights!  No noise!
> 
> But then again, not at that price.

Me either.
Ron N


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