5 Sep
2008
5 Sep
'08
6:37 a.m.
Date: Thu, 4 Sep 2008 11:59:04 -0400> From:
wdonzelli at gmail.com> To: cctalk at classiccmp.org> Subject: Re: vac tubes / was
Re: Schematics of Atanasoff-Berry> > > There is no green Ne-2. You can put a
filter on a NE-2 and> > get a nice red or yellow but not green.> > Well, you
are technically correct, as "NE-2" was originally a standard> - the little
orange glowing tube we all know and love, but there were> some makers that did make a
green version. The inside of the glass> bulb was frosted with a green phosphor.>
> --> Will
Hi
Yes, I've seen the phosphor ones but I think they may use
a different mixture of gas.
Using a diffraction grating or prism on a neon shows one yellow
and two red bands( as I recall ).
I suspect that the phosphor ones would have different
operating voltages.
Dwight
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