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Scientists crack the Brazil-nut puzzle, how do largest nuts rise to top?

Date Time 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 figure out why Brazil nuts always rise to the top of the grain pile

Scientists figure out why Brazil nuts always rise to top of grain pile By (0) Among nuts in a pile, or in a bag, Brazil nuts tend to end up at the top over time and researchers have finally figured out that their shape is what helps them climb the pile. Photo courtesy of Max Pixel April 19 (UPI) If you re not a fan of Brazil nuts, the initial handful from a bag of mixed nuts can be frustrating. While it may not be a consolation to frustrated snackers, scientists have finally figured out why Brazil nuts and other large nuts rise to the top.

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