As-yet-unexplained laws of physics keep popping up in the darnedest places, like, for example, this bed of nails.
Perfectly arrayed in horizontal rows, one would expect their pattern to break down when shaken. But as this stop-motion video shows, they lose pattern in a very orderly way.
The video was taken by T. Lynn MacDonald, a student in the lab of University of Toronto physicist Stephen Morris. His specialty is experimental nonlinear