I'm sure there is an australian standard somewhere...Clear autoglass (side windows) blocks about 97% of the UVB radiation and about 37% of UVA radiation.
Laminated windscreens block all of the UVB radiation and about 80% of the UVA radiation.
All types of commercial and automobile glass block the majority of UVB... Laminated windscreens, made from a tough plastic layer bonded between two panes of glass, provide better protection against UV radiation compared with tempered glass, blocking about 98% of UVA radiation.
NowForThe5th wrote:Glass does allow transmission of most, or the most damaging, UV.
Windscreen manufacturers advise that windscreen glass filters out at least 98% of harmful UV rays.
The longer the wavelength of light, the greater its penetrating power. UVC, with the shortest ultraviolet wavelength, is readily filtered out by Earth's ozone layer and generally doesn't reach the surface. UVB has a longer wavelength, and it does penetrate the atmosphere. UVB is not able to penetrate deep into human skin, but it does cause sunburn on the skin's outer layer and is a contributing factor to skin cancer. UVB is not able to pass through glass. UVA has the greatest penetrating power, and it causes damage to the skin's deeper layers. UVA passes unimpeded through most glass.
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