/diy/ - Do It Yourself

>>1595609
I should have known to look closer at the notes.
Thanks!
Note 25, the Phosphor Handbook, seems to have all the info I need.
At a quick glance, it looks like I need about 0.01% to 0.005% copper by weight for P31.
That seems to agree with the vague statement of "A few PPM" on wikipedia.

Next stop: Finding ZnS, Copper, and Silver powder at a price lower than just buying P31 from Sigma-Aldrich.
The ZnS is cheap enough, but the silver powder looks like it's a bit pricey.

>>1491024
If you relax your definition of "feasible" enough, then yes.
But why it has to be plastic? It's not like you don't have any random glass bottles, right?

>>1311233
>Also nobody at home is able to make a working oscilloscope from a wine bottle
http://www.sparkbangbuzz.com/crt/crt6.htm
Strictly speaking, you don't even need phosphor, as the glass itself does the job - very badly.
Of course these low vacuum magnetic deflection CRTs suck shit in every possible manner, but they work well enough that you say you have made a CRT and a scope using it.