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Video: See grains gang up when big impact hits

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High-speed video of projectiles slamming into a bed of disks provides a new microscopic picture of how a meteorite or missile transfers the energy of its impact to sand and dirt grains.

The transfer is jerky, not smooth. “It was surprising just how unsmooth the slow-down of the intruding object was,” says Duke University physicist Robert Behringer.

The research may change the way scientists model meteorite and missile impacts and their effects.

Full story at Futurity.

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Photo credit: NASA

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