http://friam.383.s1.nabble.com/Hot-Air-and-Compressibilty-tp4078685p4078747.html
Yes. And while we are at it, what does it mean when meteorologists say
Nicholas S. Thompson
> [Original Message]
> From: Marcus G. Daniels <
[hidden email]>
> To: The Friday Morning Applied Complexity Coffee Group <
[hidden email]>
> Date: 11/27/2009 11:21:15 PM
> Subject: Re: [FRIAM] Hot Air, and Compressibilty
>
>
[hidden email] wrote:
> >
> > You have to sweep your hand at a speed comparable to that of sound
> > (about 330 m/s here on earth) in order stop the air from getting away
> > and to achieve any compression.
> >
> Ok, so in one of the articles mentioned,
>
>
http://physicsworld.com/cws/article/news/40993>
> ..it said..
>
> "What they found was that a staggered column of alternately clockwise-
> and anticlockwise-rotating turbines significantly enhances the speed of
> turbine rotation. The reason, they say, is that the presence of
> neighbouring turbines concentrates and accelerates the wind."
>
> The term `concentrate', to me, sounds like a synonym of `compress' but
> in any case `accelerate' could be true in any case.
>
> The authors of the work are Caltech aerodynamics guys, so if all you'll
> give us is, "Shut up and trust the experts", well...
>
> Is their claim impossible?
>
> Marcus
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