Boojum2k: [img.fark.net image 200x200]
ArcadianRefugee: OK, I get why the crystals are six-sided (btw, non-io9 link here), but why do they seem to be roughly symmetrical? And I don't just mean "why are the six branches equidistant from their neighbors?", I mean "why do the branches then seem to sport new branches, or fan out like a paddle, at roughly the same locations and roughly to the same degree?"[ts3.mm.bing.net image 172x180][ts1.mm.bing.net image 183x182][ts2.mm.bing.net image 162x175]Like, why does crystal A (above) end in wedges on all six ends rather than, say, have spokes 2 and 5 end in spears like crystal B? Is it just a matter of moisture content and, given equal moisture, temperature, and time to grow, they'd all assume roughly similar shapes?
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