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> glass is almost black for UV [and infrared] If this is true, then why does my right arm always get more tanned than my left when I drive in the summer (UK, r
by Jaruzel 9y ago
> glass is almost black for UV [and infrared]
If this is true, then why does my right arm always get more tanned than my left when I drive in the summer (UK, right-hand drive) ?
- koolba 9y agoDifferent type of glass[1]. The windshield had a layer of plastic in between that absorbs the UV. The side windows are regular glass. [1]: http://www.tampabay.com/news/health/do-car-windows-protect-you-from-the-sun/2139733 http://www.tampabay.com/news/health/do-car-windows-protect-y...
- Retric 9y agoEven side windows block ~65% of UV light, it's really more about exposure though as people may spend a lot more time driving than walking outside.