How snow is formed

Today's pill of knowledge is inherent to "Science", specifically we will answer the question "How snow is formed".

Snow, which almost all of us love, is nothing more than solid water. It is formed by the direct passage from the vapor state to the solid state (a passage which is called sublimation) of the water vapor present in our atmosphere. 

This transformation occurs when the temperature is below zero degrees centigrade, after which, if the currents are sufficiently unstable and manage to aggregate together in such a way as to swell, precipitation occurs which gives rise to the snowfall that we all expect in winter.

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