An ingenious experiment that involves dropping a costly, high-speed video camera from a height of several metres reveals how free-falling streams of granular matter, such as sand, break up into grain clusters.
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a, CAMBRIDGE UNIV. PRESS; b, AM. PHYS. SOC.
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Lohse, D., van der Meer, D. Structures in sand streams. Nature 459, 1064–1065 (2009). https://doi.org/10.1038/4591064a
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DOI: https://doi.org/10.1038/4591064a
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