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A new pyramid-like shape always lands the same side up

(www.quantamagazine.org)
594 points robinhouston | 1 comments | 25 Jun 25 20:01 UTC | HN request time: 0.287s | source
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eggy ◴[26 Jun 25 05:57 UTC] No.44384562[source]▶
Great article!

The excitement kind of ebbed early on with seeing the video and realizing it had a plate/weight on one face.

"A few years later, the duo answered their own question, showing that this uniform monostable tetrahedron wasn’t possible. But what if you were allowed to distribute its weight unevenly?"

But the article progressed and mentioned John Conway, I was back!

replies(2): >>44385044 #>>44385438 #
1. globular-toast ◴[26 Jun 25 08:40 UTC] No.44385438[source]▶
Initially I thought it was unimpressive because of the plate. But then I thought about it a bit: a regular tetrahedron wouldn't do that no matter how heavy one of the faces was.