Klarinet Archive - Posting 000086.txt from 1998/12

From: Roger Shilcock <roger.shilcock@-----.uk>
Subj: Re: [kl] The helionet
Date: Thu, 3 Dec 1998 03:58:55 -0500

Where would UF6 vapour put us - apart from in the terminal ward????
Roger S.

On Wed, 2 Dec 1998, Grant Green wrote:

> Date: Wed, 2 Dec 1998 18:22:14 -0800
> From: Grant Green <gdgreen@-----.com>
> Reply-To: klarinet@-----.org
> To: klarinet@-----.org
> Subject: Re: [kl] The helionet
>
> Ran a few figures:
>
> The speed of sound in air is proportional to the square root of (the
> pressure divided by the density). I'll assume the pressure is a constant.
> The density of a gas is roughly proportional to its molecular weight:
>
> He - 4 g/mol
> dry air ~ 29 g/mol
> CO2 - 44 g/mol
> SF6 - 146 g/mol
>
> If we say that the speed of sound in air is "1", the speed of sound in He
> is SQRT(29/4) @-----.8, and SF6 = SQRT(29/146)
> @-----. So, playing on helium should raise the pitch by over an octave,
> CO2 will send you a few steps flat, and SF6 would put you in the bass
> clarinet range (or between bass and Eb contra).
>
> Enjoy!
>
> Grant
>
>
>
> +++++++++++++++++++++++++++++++++++++++++++++
> Grant Green gdgreen@-----.com
> http://www.contrabass.com
> +++++++++++++++++++++++++++++++++++++++++++++
>
>
>
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