An engineer noted for his ability to visualize three-dimensional structure was having coffee and doughnuts. Before he dropped a sugar cube into his cup, he placed the cube on the table and thought, ...

If you suspend a Rubik’s Cube near the corner of a room and shine lights at its exposed faces, it will cast square shadows on two walls and the floor. A real-world Rubik’s Cube has a gadget at its ...

Walking through a toy store, one of the most recognizable items you’ll see is the iconic cube with six colored sides: the Rubik’s Cube. Chances are you’ve played with one, received it as a gift, or ...