This pack comprises an in depth investigation into the fascinating properties of Moirés, or interference patterns. <br /> <br />There are 7 sets of screens (18 x 12.5 cm, printed on photographic film, although one set of screens is double size) each demonstrating a different effect. One of the most amazing effects is where the Moiré pattern becomes magnified, when you rotate one screen against the other. <br /> <br />Another amazing effect is when you slide the top screen sideways, and part of the image moves left, and other parts move in the opposite direction!
