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Re: Green glow
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To: "'Tesla List'" <tesla@pupman.com>
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Subject: Re: Green glow
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From: Tesla List <tesla@stic.net>
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Date: Fri, 2 Jan 1998 18:45:49 -0600
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Approved: tesla@stic.net
From: Gregory R. Hunter[SMTP:ghunter@enterprise.net]
Sent: Friday, January 02, 1998 1:51 PM
To: Tesla List
Subject: RE: Green glow
> To: "'Tesla List'" <tesla@pupman.com>
> Subject: RE: Green glow
> Date: Thu, 1 Jan 1998 17:33:28 -0600
> From: Tesla List <tesla@pupman.com>
>
> From: Gomez[SMTP:gomez@netherworld.com]
> Reply To: gomez@netherworld.com
> Sent: Thursday, January 01, 1998 2:10 PM
> To: Tesla List
> Subject: Re: Green glow
>
> Tesla List wrote:
> > UV-excited florescence. Could I be generating "soft" x-rays? I always
> > assumed the inert gas filling in light bulbs prevented x-ray tube
> > action. Hmmm...
> >
> > Greg
>
> I was under the impression that most light bulbs "contained" only a hard
> vacuum. And yes, with any voltage much over a few tens of kV, in a vacuum
> it ain't difficult at all to generate X-rays. And given the voltage of a Tesla
> coil, they aren't going to be soft, either, although the dose-rate,
> determined by the current, won't be much. The tungsten of which bulb
> filaments are made is just dandy for producing X-rays.
>
> Tesla himself had a few "single electrode" x-ray tube designs which ran on
> RF.
>
> regards,
> Gomez
>
> --
> Gomez: card-carrying mad scientist, extreme fetishist, fiction dabbler,
> pyrophiliac, technomage, goth, SF fan, lighting designer, dominant
> pervert, and juggler of labels... http://www.netherworld.com/~gomez
>
Gomez,
I think most regular tungsten lamps are charged with argon or some
other inert gas. That's why they look like a plasma globe when
zapped by a TC. The purpose of the gas filling is to prevent the
filament from slowly evaporating away and plating itself onto the
glass. Old style cold-cathode x-ray tubes were pulled down to a
pretty hard vacuum, which enabled electrons to build up a good head
of steam before they banged into the target anode. Gas filling
should preclude x-ray tube action by damping high-voltage electrons.
I don't really believe my green glow is caused by x-rays. Even so, I
plan to run a test or two, just to make sure. My thing is USAF
communication/navigation/radar electronics--not domestic lighting or
x-ray technology. Feel free to enlighten me if I'm spouting
nonsense.
Happy New Year,
Greg
Feeling like Roentgen in bleak East Anglia