(urth) This week in Google alerts

[David Stockhoff]

On 11/4/2011 3:11 PM, Sergei SOLOVIEV wrote:
> To me (IMHO) Gerry's inference looks much more convincing and closer 
> to the text,
> let's be fair. "Silver screen" is (or at least was in 70-es) a 
> commonplace
> speaking about the television. Moreover, the cathode ray tubes (when 
> television used them)
> contained silver
>
> >The phosphor viewing surface is formed from a continuous layer of a 
> single material in >monochromatic CRTs, or is composed of individual 
> dots of three different materials in color CRTs. >Zinc sulfide is a 
> common phosphor material. The color is determined by adding a very 
> small >amount of material called an activator. Zinc sulfide with 0.01% 
> silver activator emits a blue light. >When a 0.001% copper activator 
> is used, it produces a green light. A 50/50 mixture of zinc sulfide 
> >and cadmium sulfide with a 0.005% silver activator produces a yellow 
> light. Red light can be >produced by adding silver or copper to zinc 
> sulfide
>
> Probably you don't remember that, but I think GW does, and it is a 
> very fine reference
> to the technology level in the Whorl.
>
> Sergei 


I have no doubt about that interpretation at all. But what does it mean? 
What does it do?