Re: Durability of materials in space
From: LukeCampbell (lwcampbe_at_uci.thetrash.edu)
Date: 08/30/04
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Date: Mon, 30 Aug 2004 10:42:03 -0700
Russell Wallace wrote:
> On Mon, 30 Aug 2004 01:12:49 GMT, Josh Halpern
> <j.halpern@incoming.verizon.net> wrote:
>
>
>>Bad choice. You have to get UV A and a bit of B through it.
>
>
> I regard UV shielding as a feature, not a bug - why do you think UV is
> desirable?
UV B is necessary for the conversion of a precursor of vitamin D into
vitamin D. Vitamin D is a hormone necessary for calcium regulation in
the body. A chronic lack of vitamin D results in osteoporosus and
skeletal deformaties. An acute lack of vitamin D leads to muscle
tremors followed by paralysis.
Luke
-- To email me, take out the trash.
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