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Klein Bottles - Numberphile
About this video
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.
Why it appears in the archive
HN likes it for Cliff Stoll's infectious passion for topology, and it gets linked in threads about him and about Mobius strips.
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From the Hacker News discussion
If anyone is talking about Mobius Strips then Cliff Stoll MUST be mentioned. This guys passion for Mobius Strips is infectious. [VIDEO] Also he was one of the first system admins to actually catch a hacker who was using his server in Germany in 1989. [LINK]
Read original comment ↗Yes, in the video I'm talking about [VIDEO] he says that a bootle has an edge (~3'40). A sphere does not have an "inner surface", it has just one surface. So does a potato. If you go from sphere to potato to bowl, when does an edge appear and does it have to appear, is my question.
Read original comment ↗Interesting, didn’t realize that’s Cliff. - Related Numberphile: [VIDEO] - Direct link to his Klein bottle website: [LINK]
Read original comment ↗