Rods and Jiggling of Rods

The shaking back and forth is a way of thermal, what we call thermalizing the system. It's giving them a little bit of of energy till they move around and explore. I mean, it's not the same thing as if you had rods and they were really floating in a liquid,. They were really sampling all the different ways that they could arrange and line up. And slowly but surely, the rods all started lining up in one direction.