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Extreme Temperatures Breed Glassy Hollow Forms Called ‘Ghost Apples’

February 15, 2019

Kate Sierzputowski

You’ve seen the perfect arcs of boiling water solidified mid-throw, and perhaps this frozen speeding sign that duplicated itself over 2019’s Polar Vortex, but have you seen ghost apples? Thanks to a Facebook post by farm manager Andrew Sietsma, the phenomenon has captivated the internet, leaving commenters to marvel at the sight of these glass-like specimens that remain after apples have rotted from their icy exterior. Sietsema told CNN that this winter the weather in western Michigan was “just cold enough that the ice covering the apple hadn’t melted yet, but it was warm enough that the apple inside turned to complete mush (apples have a lower freezing point than water).” Jonagolds are one of Sietsema’s favorite apple varieties, but on the farm they are now referred to as “Jonaghosts.” (via Reddit and Bored Panda)

 

 

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