A transparent container of corn syrup is illuminated with polarized light using an overhead projector and a piece of polaroid film. A mask is placed around the base of the cylinder to eliminate unwanted light. When the cylinder is viewed from the side through a second piece of polaroid, a spiral band of color interference correlated with the polarization of light in the corn syrup is visible.

L1, A0 top

PIRA DCS 6H30.30