With the help of powerful computers, researchers discovered a four-sided shape that naturally rests on one side, and built a real-life version from carbon fibre and tungsten
Več na: https://www.newscientist.com/article/2486184-mathematicians-create-a-tetrahedron-that-always-lands-on-the-same-side/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
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