3 ms·

I heard it said that it's lack of UV that does the damage, glass filters out UV. Sounds like it might be a resolvable problem without having kids take class out

I heard it said that it's lack of UV that does the damage, glass filters out UV. Sounds like it might be a resolvable problem without having kids take class outdoor.

unbad505 4y ago
Not a lack of Ultra Violet light, but a lack of Violet light, which also needs to be quite bright in order to have a proper effect. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8179197/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8179197/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233810/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233810/