All the loose electrons move at the same time, almost like water flowing around in a circular tube.

Even the streetlights, circular glowing tubes, were not all that different.

It appears to be a circular tube mounted on a pedestal.

He grasped their only weapon, a circular purple tube.

For a circular tube the inertance is given by:

Already, the rails were softening, the circular tube was becoming ovoid.

He removed that and felt a small, circular doublefluorescent tube.

It is identical to the second moment of area J for concentric circular tube, or round solid shafts only.

The key stride was a method to store antiprotons in a large circular tube from which all air had been removed.

It is basically a very large, circular tube that has all the air inside evacuated.