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Re: Finally a Field Mill!



Original poster: "kayaker by way of Terry Fritz <teslalist@qwest.net>" <kayaker@sbcglobal.net>

Hello Everyone:o)

If you want to build your own Fieldmill. You can go too the website for
Amateur Scientist's at
www.sas.org. look for, Scientific American, The Complete Collection of The
Amateur Scientist.
There are thousands of projects on two CD's. And for just under thirty
dollars. It's not a bad deal.
A couple of other site are as follows:
www.precisionstrbe.com/jc/,www.trifield.com/.
Be safe, have fun.
Thanks to everyone.

Doug, The Tinkermister
----- Original Message -----
From: "Tesla list" <tesla@pupman.com>
To: <tesla@pupman.com>
Sent: Tuesday, June 17, 2003 8:56 PM
Subject: Re: Finally a Field Mill!


 > Original poster: "Charles Brush by way of Terry Fritz
<teslalist@qwest.net>" <cfbrush@interport.net>
 >
 >
 > >
 > >I borrowed a field mill meter at my university (made by the Phywe
 > >company), and made some interesting measurements of weak electrostatic
 > >machines with it:
 > >http://www.coe.ufrj.br/~acmq/bohnenberger.html
 > >http://www.coe.ufrj.br/~acmq/bennet.html
 > >It's very sensitive, being able to detect a few volts a meter away, and
 > >has a computer connection that is convenient for more complex
 > >measurements.
 > >For those measurements, I used it as a high-impedance voltmeter, using
 > >an attachment that is just a plate in front of the rotating vanes.
 > >The instrument is not very robust, however. I have two to repair after
 > >someone connected the power supply input to the meter output...
 > >
 > >Antonio Carlos M. de Queiroz
 >
 >
 > Interesting results!  One thing I would like to do at some point would be
 > to tap the circuit that runs the meter and run it through an a/d converter
 > to a computer or some other type of display.  The meter on the unit is so
 > small that it lacks much resolution.  It might be capable of reading field
 > changes during a thunderstorm which would be interesting, but some
 > modifications would probably be necessary
 >
 > Zap!
 >
 > Charles Brush
 >
 >
 >