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File:Snowflakes under microscope PHYSIQUE populaire E Desbeaux fig 455 Page 603.jpg

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Examples of snowflakes under microscope in the book PHYSIQUE populaire written by Emile Desbeaux fig 455 Page 603 publication dateː 1890

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English: These snowflakes are aggregates of snow crystals that all have hexagonal symmetry – the signature of the frozen water molecule. The growth of crystals takes place from a microscopic seed and lasts several hours during which the formation conditions vary. The complex shapes are due to temperature, water vapor concentration and local electric fields. It can be demonstrated that no two snowflakes are perfectly identical. Emile Desbeaux (1845 - 1903 Paris) was a playwright and scientific popularizer for young people.
Français : Ces flocons de neige sont des agrégats de cristaux de neige qui ont tous une symétrie hexagonale ː signature de la molécule d'eau congelée. La croissance des cristaux se fait à partir d'un germe microscopique et elle dure plusieurs heures pendant lesquelles les conditions de formation varient. Les formes complexes sont dues à la température, à la concentration en vapeur d'eau et aux champs électriques locaux. On peut démontrer qu'il n'y a pas 2 flocons de neige qui soient parfaitement identiques. Emile Desbeaux (1845 - 1903 Paris) a été auteur dramaturge et vulgarisateur scientifique pour la jeunesse.
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