[ARC5] VR Tubes

[Kenneth G. Gordon]

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