lorenzo63
Age quod Agis
Basta mettere un comune vetro da finestra -
Ordinary window glass passes about 90% of the light above 350 nm, but blocks over 90% of the light below 300 nm
https://en.wikipedia.org/wiki/Ultraviolet
Ordinary window glass passes about 90% of the light above 350 nm, but blocks over 90% of the light below 300 nm
https://en.wikipedia.org/wiki/Ultraviolet