[ARC5] VR Tubes

[Jim Haynes]

On Thu, 8 Nov 2012, Robert  Eleazer wrote:

> "For one thing, VR-tubes must be able to have some input from light to
> "encourage" the formation of the internal "plasma""
>
> Then how does the one in my RT-7/APN-1 work given that it is sealed inside a case that has only a few air holes in the back?
>
Some of them have a little bit of radioactive stuff inside to get
the ionization started.