Snowflake morphology, diagram

Numéro d’image : 12950747
Snowflake morphology, diagram
Snowflake morphology, diagram. Snowflakes are ice crystals that form in air that has a temperature near the freezing point of water. If the air is calm, then a symmetrical, hexagonal snowflake can form. The two main growth patterns observed are faceting and branching. When growth is fast and unstable, branching patterns create a dendritic snowflake. Slower growth allows the straight lines and hexagonal shapes of a plate snowflake. Snowflakes can display both types of growth. The type of growth also depends on temperature and humidity, which changes in a different way for each snowflake, causing the wide variation in snowflake patterns. The different types are illustrated here.
Licence : Droits gérés
Crédit: Science Photo Library / Libbrecht, Kenneth
Taille de l’image : 5042 px × 3847 px
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