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Klein Bottles - Numberphile
Numberphile
Numberphile interviews Cliff Stoll about Klein bottles, the one-sided surfaces with no inside or outside. Stoll explains them with characteristic enthusiasm and shows off his collection.
HN likes it for Cliff Stoll's infectious passion for topology, and it gets linked in threads about him and about Mobius strips.
3 Hacker News mentions · 2015–2022