Uncovering the real dirt on granular flow

(PhysOrg.com) -- A handful of sand contains countless grains, which interact with each other via friction and impact forces as they slip through your fingers. When a handful becomes a load in an excavator bucket, those interactions multiply exponentially.

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<p><a href="http://www.physorg.com/news147542228.html">Uncovering the real dirt on granular flow</a></p> <p>(PhysOrg.com) -- A handful of sand contains countless grains, which interact with each other via friction and impact forces as they slip through your fingers. When a handful becomes a load in an excavator bucket, those interactions multiply exponentially.</p>