Template:Are You Sure/February 4

The Menger sponge, a fractal curve which is a three-dimensional generalization of the one-dimensional Cantor set and two-dimensional Sierpinski carpet.

• ... that nuclear physicist Val Logsdon Fitch shared the 1980 Nobel Prize in Physics with co-researcher James Cronin for a 1964 experiment which proved that certain subatomic reactions do not adhere to fundamental symmetry principles, demolishing the faith that physicists had that natural laws were governed by symmetry?
• ... that mathematician Karl Menger discovered the Menger sponge (mistakenly known as Sierpinski's sponge), a three-dimensional version of Sierpinski's carpet, and that both the Menger sponge and Sierpinski's carpet are related to the Cantor set?