Designer Snowflakes - SnowCrystals.com
▻http://www.snowcrystals.com/designer/designer.html
a photograph of a designer snowflake — a real sliver of ice, grown from water vapor, but created under controlled conditions in the laboratory. They might also be called synthetic crystals, but I call them designer snowflakes because I am free to design the final shape by changing the temperature and humidity as the crystal grows.
et un livre complet sur les flocons de neige :
▻https://arxiv.org/ftp/arxiv/papers/1910/1910.06389.pdf
