Can ultraviolet rays pass through glass?

But UVA rays, which penetrate deeper, can still get through. ... read more

There are possibilities that UV rays can pass through window glass. There are two kinds of ultraviolet radiation from them only two reach the earth's surface i.e. UVA and UVB. UVC Filtered by ozone layer. Most glass used for windows blocks UVB but not UVA. Glass can protect from skin burn, but it does't protect from UVA in a long run. read more

Beyond that, the only way to accurately test how much UV passes through your windows would be to finding someone with a radiometer that measures the UV transmittance. For my patients who sit in direct sunlight coming in through window glass, I recommend wearing a mineral sunscreen and clothing that blocks UV rays. read more

It turns out that the electrons attached to molecules in typical glass (like the glass in your windows at home, or the safety glass in car windows) can absorb radiation at UV wavelengths, but not at visible light wavelengths � therefore, visible light passes through glass as if it weren�t there, but UV radiation is absorbed. It depends on the glass exactly how much UV radiation is absorbed, though. read more