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Big Pic: Mushrooms Make Wind To Send Spores Flying

   
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The spores released by an Amanita form a cloud of bright little specks.
Patrick Hickey

Mushrooms produce spores in order to reproduce and spread their mushroomy goodness throughout the land—or at least propagate the species. And for a long time, scientists believed they released these spores at random. Hopefully they would catch wind and carry, but what if the air was still? At the American Physical Society's annual meeting of the Department of Fluid Dynamics yesterday, scientists presented a possible alternative. 

Mushrooms might not be so passive—in fact, they might be creating their own wind. The researchers found that at least some mushrooms, and maybe all of them, can manipulate their environment through water vapor and active cooling, producing air flow. The extra lift granted by the process gives the spores an extra four inches horizontally and vertically. The team observed the spore winds using high-speed videography, and used a laser beam to illuminate the image above.

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课本信息
作者: Lindsey Kratochwill
发布者: yibei
 
创建时间: 2013-11-27
更新时间: 2013-11-30
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发布状态: 已发布
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书集: Popular Science
分类: 英文RSS精选