Meet The Bille, A Self-Righting Tetrahedron That Nobody Was Sure Could ExistTake a weeble, run it through a Minecraft filter, build it almost entirely of open air, and what have you got? It’s called a Bille, and as a monostable tetrahedron – that is, a four-sided shape that will always come to rest on the same side, no matter how it’s tossed or thrown around – it has, frankly, been a long time...
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