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Snowflakes, Supercooling

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1368425.  Wed Dec 16, 2020 10:20 am Reply with quote

This will be something of an omnibus fact post but, they all come from this incredible article on the science of snowflake formation.

There are 14 known forms of ice.

If you cool a drop of pure water to below its freezing point it won't freeze, and this is because the molecules in that drop of liquid have thermal motion which prevents them from crystallising. In fact the temperature has to fall to -42C before freezing occurs.

There twice as many possible arrangements of water molecules in a snowflake as there are atoms in the universe. So, it is technically not true that all snowflakes are unique, as there is an infinitesimal chance of two being the same.

1368441.  Wed Dec 16, 2020 11:45 am Reply with quote

I thought this was going to be about how one can really offend people...

1368459.  Wed Dec 16, 2020 1:23 pm Reply with quote

... and be super cool at the same time.

Where did I put that coat?


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