Understanding the dynamics of granular materials--such as sand flowing through an hourglass or salt pouring through a shaker--is a major unsolved problem in physics. A new paper describes a pattern for how record-sized "shaking" events affect the dynamics of a granular material as it moves from an excited to a relaxed state, adding to the evidence that a unifying theory underlies this behavior.
Movers and shakers: New evidence for a unifying theory of granular materials
Phys.org - 8 Jan 2021 19:08
Understanding the dynamics of granular materials--such as sand flowing through an hourglass or salt pouring through a shaker--is a major unsolved problem in physics. A new paper describes a pattern for how record-sized "shaking" events affect the dynamics of a granular material as it moves from an excited to a relaxed state, adding to the evidence that a unifying theory underlies this behavior.
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