Thanks for the update on what you've been doing with your microbarograph
Arie. The one I described at http://www.belljar.net/microbar.htm has been
substantially modified and, come springtime, will be installed underground
to minimize thermal effects (I got the hole half dug in the fall, then it
started to snow, and snow and snow).

I am interested in your silicone tubing idea. Can you provide some more
details?

Steve Hansen

----- Original Message -----
From: "Arie Verveer" 
To: 
Sent: Sunday, February 16, 2003 3:14 AM
Subject: Re: BBC news article about infrasound


> In the end I used 6 meters of very flexible thin walled silicon tube as
the sensor head. This was
> located in a building with many vents and dust filters.

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