You can simulate the effects of motion by using stressed cellophane and a
rotating polarized spinner. As light travels through stressed cellophane and
the polarized spinner, the light waves vibrate and the axis of the light wave
turns. The severity and direction of vibration depend upon how the stressed
cellophane and polarized spinner are oriented relative to each other.
Commercially available products to simulate motion are available from a
variety of manufacturers.
Figure 2-28 shows how to achieve the effects of polarized motion.
Figure 2-28. Creating the illusion of motion.