When a pane of glass is exposed to very cold air on the outside while inside the air is reasonably moist, frost can form. Known as ice flowers or fern frost, it is remarkable for the intricate patterns it creates.
The surface of the glass influences the way that the ice is formed so that the first process of crystallization, known as nucleation, is randomized. The patterns, then, are almost infinite in variety. Science aside, ice flowers are a source of wonder, things of elegance and beauty.
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