Klarinet Archive - Posting 000089.txt from 2008/09

From: "Peter Gentry" <peter.gentry@-----.uk>
Subj: RE: [kl] Re: Warm Air / Cold Air
Date: Tue, 23 Sep 2008 12:19:56 -0400

The scientific explanation is that as air expands it cools, the greater the
expansion the greater the cooling. However in the clarinet context I would
be surprised if this effect is large or controllable. In any event the
airflow will interact with the body of the instrument. So if there is an
effect it is probably marginal and undetectable to most human ears.

regards
Peter Gentry

-----Original Message-----
From: Joseph Wakeling [mailto:joseph.wakeling@-----.net]
Sent: 23 September 2008 08:52
To: klarinet@-----.org
Subject: Re: [kl] Re: Warm Air / Cold Air

Keith wrote:
> I am prepared to be argued out of this view but the arguments has better
be good :). I loathe bad science.

Basic simple and dumb experiment -- blow on your hand, hard and with a
narrow lip opening, or slow and with a wider opening -- it _feels_
colder and warmer, respectively. But that would be wind chill rather
than a really significant temperature difference, I suspect. :-)

I suppose that blowing-on-the-hand exercise might be useful to give a
student a sense of what different kinds of breath they can use.
Alternatively it might be a good way of getting the head out of the way
of what's physically happening...

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