North-West and South-East coupling of atoms In this interaction, the atomic compass needles do not only align in a North-South direction, but also in an East-West direction. "Where they point depends ...

I have a terrible sense of direction. In the car or on foot, I can get lost effortlessly unless I'm very familiar with where I am. I'm often amazed how well most people get around. I can always find ...

The North Star. This is found by using the sidewall of the Big Dipper’s bowl (on the right side) and lining up the two stars to form a line which points upward. Follow this up to the (faint) handle of ...