People in order (youtube)
Ages 1 to 100 hitting a drum in 3 minutes. Everyone has a different style of hitting the drum and / or announcing their age
From Pentagons to Pentagrams
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I recently showed you that if you take the regular icosahedron: considered
in a coordinate system based on the golden ratio, and then replace √5 by
-√5 in ...
12 hours ago
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