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Submission + - Why does saliva form beads when pulled thin? (

cremeglace writes: Scientists have finally solved the most important problem that ever puzzled humankind: why does spit clump into beads when you pull it between your fingers? The answer has to do with polymers, or something. A better explanation--and a lovely picture--can be found at ScienceNOW.
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Why does saliva form beads when pulled thin?

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I cannot draw a cart, nor eat dried oats; If it be man's work I will do it.