Mathematicians create a tetrahedron that always lands on the same side
The self-righting tetrahedron Gergő Almádi et al. A four-sided shape that will always come to rest on the same side no matter what side it starts on has been built by mathematicians, decades after it was first proposed to exist. Mathematicians have long been fascinated by self-righting “monostable” shapes, which have a preferred resting spot…
