3-D imaging reveals hidden forces behind clogs, jams, avalanches, earthquakes

3-D imaging reveals hidden forces behind clogs, jams, avalanches, earthquakes
Durham NC (SPX) Mar 06, 2015 - Pick up a handful of sand, and it flows through your fingers like a liquid. But when you walk on the beach, the sand supports your weight like a solid. What happens to the forces between the jumbled sand grains when you step on them to keep you from sinking? An international team of researchers collaborating at Duke University have developed a new way to measure the forces inside materials ... more

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