This is a Clifford torus. In geometric topology, it is the simplest and most symmetric flat embedding of the Cartesian product of two circles S1a and S1b (in the same sense that the surface of a cylinder is "flat"). It is named after William Kingdon Clifford. A normal torus is basically a a tube shape that looks like a doughnut or an inner tube, created by revolving a circle in the 3rd dimension around a circle, which is why a torus is a "surface of revolution. Here🔗 is a link to a Desmos page that you can play with it. When you change the 3D properties (X, Y and Z), you can just see the doughnut rotating. But when you play with the 4th dimension (W), your doughnut seems to lose its 3D form, meaning, you can't 'imagine' what's going on physically. However, Before playing...
