[TCML] RE: [] STRIATIONS

["Anthony R. Mollner" <penny831@xxxxxxxxxxxxx>]

Ed, you have really piqued my interest in vacuum demonstrations. I happen to
have an A/C vacuum pumped. I had it completely factory overhauled and than
I've never used it. DO you have any east to do experiments that you would
recommend?

Tony

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx]On
Behalf Of Ed Phillips
Sent: Sunday, November 18, 2007 8:35 AM
To: Tesla Coil Mailing List
Subject: [TCML] STRIATIONS


    Striations in the discharge between two electrodes can be seen
easily at some gas pressures and are a rough measure of the pressure.
I've observed them often enough and think they are most visible when the
pressure is still over a mm.  Set up a discharge tube and a vacuum pump
and observe them as the pressure goes down.  Put a pinch clamp on the
tube to the pump and you can hold the pressure and observe at your leisure.

    Every guy playing with TC's and HV in general should also have a
vacuum pump available as there are lots of interesting visual
experiments to be run.  Even a converted rotary AC or refrigerator pump
is plenty good enough to get down into this pressure range.

Ed

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