[ARC5] VR Tubes

[Geoff]

> On 8 Nov 2012 at 18:37, 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?
>
> As I said, it doesn't take much: even the ambient light that gets through
> those louvres would do the trick.
>
> As I understand it, all it takes is one or two photons to do it.
>
> Ken W7EKB


Somewhat akin to the 0Z4 it seems