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Aflutter in the Breeze
Fabrics flutter in seemingly impossible ways in artist Thomas Jackson's images. But despite first appearances, each photograph is true to life; the fabrics are suspended on taut lines. (Image credit: T. Jackson; via Colossal)
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Mimicking Plant Movement
Many plants control the curvature of their leaves by selectively pumping water into cells that line the outer surface. This swelling triggers bending. Engineers created their own version of this structure. (Image credit: T. Gao et al.; via GoSM) Read the full article
Inside a cavity with a square cross-section, bubbles form an array. The shapes of their edges are determined by surface tension and capillarity. (Image and research credit: M. Jouanlanne et al., see also)
Nature is full of cilia, hairs, and similar flexible structures. Unsurprisingly, flows interact with these structures very differently than with smooth surfaces. (Image and research credit: C. Ushay et al.)
Desert-dwelling sandgrouse resemble pigeons or doves, but they have a very different superpower: males can soak in and hold 25 milliliters of water in their feathers, which they carry tens of kilometers back to their chicks. (Image and video credit: Johns Hopkins; research credit: J. Mueller and L. Gibson; via Forbes; submitted by Kam-Yung Soh)
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Some water-walking insects are able to leap off a watery interface. One way to model these creatures is with elastic hoops, which can also propel themselves off the water's surface. (Image, video, and research credit: H. Jeong et al.)
Collapsing soap films buckle and wrinkle elastic bands in this APS DFD Gallery of Fluid Motion video. (Image, video, and research credit: F. Box et al.; see also F. Box et al. on arXiv)
There's a surprising amount of physics in the humble strand of spaghetti. (Image credit: Pixabay; research credit: N. Goldberg and O. O'Reilly; via Ars Technica)
