homebrew vactrols

[Paul Perry]

At 07:47 AM 18/04/00 -0600, Ian Fritz wrote:

>It's just the number of excited free carriers that determines the
>resistivity. What color light they are produced with doesn't matter.

..I realise this.

>However, the rate at which carriers are produced, of course, does depend on
>the wavelength and intensity of the light. There could also be issues with
>illumination uniformity at low levels.

..exactly, what I wonder is whether the material itself is everywhere 
equally likely to respond to a particular photon. Because if not, it might be 
that acombination of wavelengths could produce a lower resistance overall.

paul perry melbourne australia