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Iowa State Fair PIREP



 
 
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Old August 18th 05, 09:47 PM
Rick
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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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