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161 points isaacfrond | 1 comments | 16 Jan 25 09:57 UTC | HN request time: 0.201s | source

1. gosub100 ◴[16 Jan 25 14:08 UTC] No.42725287[source]▶

Sort of a tangent, but here's a 20m video explaining how to invert a sphere without tearing it:

Mathematicians discover new way for spheres to 'kiss'