4 ms·
Average guy here, I have no clue what you're talking about.
by pard68 3y ago
Average guy here, I have no clue what you're talking about.
- ImPostingOnHN 3y agoquartz is mostly transparent to UV radiation, glass is not
- pard68 3y agoAh so one makes UV light just an innocuous, annoying purple and the other makes it like the inside of a tanning bed.