Re: Finally a Field Mill!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "kayaker by way of Terry Fritz <teslalist-at-qwest-dot-net>" <kayaker-at-sbcglobal-dot-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-dot-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-dot-com/jc/,www.trifield-dot-com/.
Be safe, have fun.
Thanks to everyone.

Doug, The Tinkermister
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-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-at-qwest-dot-net>" <cfbrush-at-interport-dot-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
 >
 >
 >