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Published online 15 January 2003 | Nature | doi:10.1038/news030113-3

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Nut theory gets a shakedown

Physics of muesli almost passes lab test.

Whether the first person to open the muesli, or the one who shakes out the last of it, gets all the nuts depends on how vigorously you shake the packet, and how full it is, say researchers in Germany.

Ingo Rehberg and colleagues at the University of Bayreuth have been shaking glass, wooden and metal beads of different sizes in a glass cylinder at various speeds and by various amounts.

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