The Impossible Tetrahedron: From Math Problem to Real-World Object

Mathematicians have long studied the 'monostable tetrahedron' – a unique shape stable on only one side. Theoretically, this shape is achievable through clever mass distribution, but building one proved incredibly challenging. Gergő Almádi and his team, after complex calculations and multiple failed attempts, finally constructed a monostable tetrahedron model using a carbon fiber frame and tungsten carbide components. This successful model not only validates mathematical theory but also offers new avenues for future engineering designs, such as lunar landers.