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Robert M. Gary wrote in message
. com... Just a quick note/question regarding the UV comment and clouds. Is it actually true that cloud cover reduces UV exposure? I've heard that you need as much sun screen when its overcast as any other day. Does anyone know the real answer? Funny you should ask. I'm interested in some more information on that, as I try to get some regular but moderate UV exposure for my psoriasis. I know that cloud cover attenuates UVA and UVB somewhat, but I don't know how proportional it is to visible light attenuation. It still is possible to get sunburned on a cloudy day, but people can sometimes exaggerate a genuine concern. - Rick |
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