@bfibbs depends on the type of glass. almost all glass blocks UV-B, not so much with UV-A.
It turns out that glass blocks ultraviolet radiation, sparing you a sunburn. You learn something new and totally unexpected every day.
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.