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When it rains, why don't sheep shrink?
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Posted 23 June 2008 - 06:58 PM
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Posted 08 July 2008 - 08:34 PM
Because wool has a fancy epicuticle, that can absorb and repel up to 30 times it's weight in water, thus keeping the skin of the sheep dry and safe from shrinkage.
More importantly, wool doesn't shrink in cool water - and most rain isn't hot. Oh, something about the oil from the sheep's skin protecting the wool from the water, and that protection is lost when the wool is sheared from the sheep.
More importantly, wool doesn't shrink in cool water - and most rain isn't hot. Oh, something about the oil from the sheep's skin protecting the wool from the water, and that protection is lost when the wool is sheared from the sheep.
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