When the two disks rotated at the correct speed, the synchronization of the windows and the images created an animated effect.

The spiraling disk is rotating at a speed of 1.2 million miles an hour.

Oxygen is obtained from the atmosphere as the disks rotate.

Instead, she watched the tiny disk of Vulcan slowly rotate on the screen.

Imagine a disk of radius R rotating with constant angular velocity .

The surface tension of air through the small gaps creates friction, making the disks rotate around the shaft.

At the top of the shaft, the disk rotated outward again and deposited Ned in a kiosk in the roof garden.

One disk was stationary, while the other disk rotated.

The white disk rotates once in a synodic month.

The resulting arcs were rapidly stretched, cooled, and broken as the disk rotated.