Snowflake with a stellar (or dendritic) crystal form,made in a cloud when water freezes at negative fifteen degrees Celsius. When crystallization occurs slowly,in calm air and in temperatures near the freezing point,snowflakes will exhibit hexagonal symmetry | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kinsman, Ted |
Taille de l’image : | 3900 px × 3437 px |
Model Release : | Non requis |
Restrictions : |
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