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Brief Communications
Nature 437, 635 (29 September 2005) | doi:10.1038/437635a; Published online 28 September 2005
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Rheology: Liquefaction of quicksand under stress
A. Khaldoun1, E. Eiser2, G. H. Wegdam1 & Daniel Bonn1,3
Abstract
A person trapped in salt-lake quicksand is not in any danger of being sucked under completely.
Abstract
People or animals caught in quicksand find it very hard to escape1. Here we show that quicksand acts as a trap because it becomes unstable when it is forced to move — first it liquefies, and then it collapses. But a simple sinking test demonstrates that it is impossible for a human to be drawn into quicksand altogether.
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