Originally Posted by
NMuir
Can you cite your source on that? I would like to read up on it.
I have a health physics background, it's just one of those things I know but you can easily google it...
This talks about UVA vs. UVB. It also reflects the possibility that UVA may also contribute to skin cancer risk, which is suspected but yet proven to my satisfaction.
UV: absorption, distribution, metabolism
This talks about glass absorption:
Why can you not get sunburned behind a glass?