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Resource funded by the Winnefox Library System and the Wisconsin Public Library Consortium.


Submitted on Saturday, January 16, 2016 - 9:49pm

"Hoarfrost: a deposit of interlocking ice crystals (hoar crystals) formed by direct sublimation on objects, usually those of small diameter freely exposed to the air, such as tree branches, plant stems and leaf edges, wires, poles, etc., which surface is sufficiently cooled, mostly by nocturnal radiation, to cause the direct sublimation of the water vapor contained in the ambient air."*
 

*quoted from the National Snow and Ice Data Center http://nsidc.org/ 

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