3 ms·

It's like the old Klingon proverb: People who live in glass houses should upgrade to transparent aluminum.

• Meing4im 8y ago
  I have checked and according to graphs I have found both sapphire glass and AlON both do indeed transmit UVB.
  • fastball 8y ago
    Ah good, I need to replace the windows in my house, that'll be a great upgrade. Checks prices It'll only cost me ~$240,000 for a single room!