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Coffee Stains Test Universal Equation

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Physics 6, 7 (2013) – Published January 18, 2013
An equation that describes a wide array of phenomena can be directly tested by watching the equivalent of a drying coffee drip.
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Model of Tumbling Sand Castles

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Physics 5, 122 (2012) – Published November 2, 2012
Two-dimensional simulations provide the first element-by-element accounting of the fluid and grain flow in an underwater avalanche.
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Magnetic Field Flips Miniature Origami

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Physics 4, 93 (2011) – Published November 11, 2011
An improved version of a technique for folding tiny objects from a thin membrane uses a magnetic field to affect the shape. The membrane wraps around a droplet of fluid that distorts in response to the field.