As a natural phenomenon, there is substantial variation between auroras. Pale light may appear as an arc ... The exact same aurora will look very different from different latitudes, for example.

This is the typical phenomenon ... the light is viewed along the lines of force—that is, through axial holes pierced in the pole-pieces of the electromagnet, the modification is different.

In a paper recently published in Nature ... "light" in these magnets is much slower—about 100 times slower than the speed of spinons. This stark difference leads to fascinating phenomena such ...