PSN-L Email List Message

Subject: Re: Tiltmeter progress
From: "tchannel" tchannel@..............
Date: Wed, 4 Apr 2007 16:55:02 -0600

Hi George,  Thanks for the reply,  to me this is great stuff, new to me.

How is it working for you?   Do you have a larger picture of the unit as 
illustrated at the top of you wed page?
I can't see it very well.   Thanks, Ted

----- Original Message ----- 
From: "George Bush" 
Sent: Wednesday, April 04, 2007 4:44 PM
Subject: Re: Tiltmeter progress

> Ted-
> I want to apologize to you and the list for sending a message for Chris
> Chapman to the whole list (I just hit reply without seeing who it was
> replying to). I have been interested in Earth tides and have wanted to 
> make
> an instrument to measure them. C. L. Strong originally had an article on
> making a tiltmeter based on two mercury-filled cups connected by a tube 
> and
> measuring the level by a capacitance gauge, "A sensitive mercury tiltmeter
> that serves as a seismometer" Scientific American, November 1973, pp.
> 124-129. The electronics were updated by an article in Nuts & Volts by Ron
> Newton, "Measure Earth Tides with a Tiltometer" I ordered a board from 
> Ron,
> but was unable to make it work. I have just completed a circuit suggested
> by Chris based on the Linear Technology LTC 1043 chip and the email to
> Chris was to let him know how it was working.
> Check my website at 
> for further info on my project and references.
> At 11:59 AM 4/4/2007 -0600, you wrote:
>>Hi George,  This is interesting.  Where can I find articles to read more
>>about the basic principle. etc.   Thanks, Ted
> ...snip...
> George
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