The good people at the US Postal service do produce some splendid sets of stamps on quite a regular basis. Today, to my delight, I was offered this set as one of my choices at the post office:
There’s so much physics behind the microscopic lattice of H2O molecules underlying such a lovely shape, with the pleasant C6 symmetry of the macroscopic result – the snowflake. I found a lovely “morphology diagram” showing the sorts of shapes you get depending upon temperature and supersaturation of the water vapour that condenses Continue reading ‘See Six’
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