A moiré pattern appears when you stack and rotate two copies of an image with regularly repeating shapes, turning simple ...

Now, just sitting still, the above pattern may appear to have movement ... Or perhaps it’s got some DSE, or “dirty screen effect.” My bigger concern, though, is when demo or floor models ...

A concise, comical explanation of Moiré patterns, via XKCD. Moiré patterns are interference patterns created when grids of different size or alignment are placed over each other. You’ve ...