On Sat, Jan 9, 2021 at 06:17 PM, Dude wrote:
I¡¯ll take a guess and say that bulb powder was Zn Oxide for its high reflectance and diffusion for that nice even look.
Dud
Spent some time with this material today, no Zn or any other metal present by XRF (except maybe Al), Kaolin clay is Al Si and O, non of which are readable with any certainty with my outfit.
PS if Zn-O is a reflector, wouldn;' it reflect the light back inside?
Geo
