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Scientists crack ‘the Brazil-nut’ puzzle, how do largest nuts rise to top?
Scientists have for the first time captured the complex dynamics of particle movement in granular materials, helping to explain why mixed nuts often see the larger Brazil nuts gather at the top. The findings could have vital impact on industries struggling with the phenomenon, such as pharmaceuticals and mining.
Many people will have the experience of dipping their hands into a bag of mixed nuts only to find the Brazil nuts at the top. This effect can also be readily observed with cereal boxes, with the larger items rising to the top. Colloquially, this phenomenon of particles segregating by their size is known as the ‘Brazil-nut effect’ and also has huge implications for industries where uneven mixing can critically degrade product quality.
Scientists crack the Brazil-nut puzzle, how do the largest nuts rise to the top?
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Researchers Figure Out Brazil Nut Effect in Mixed Particles
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