Another New Horse of a Different Color

Very simple design place on top of an iPad with an all white screen on a rotating platform and then viewed with a polarized filter.
The end of the video shows two horses. Each folded from a clear square that was labeled as cellophane. however, the first is clearly birefringent and the second is not birefringent and still clear when viewed with polarized filters.

It is becoming difficult to find truly birefringent cellophane in craft stores.