Repurposed - Clock into Kinetic Wall Art
In this instructable we'll convert an inexpensive clock into wall art with a subtly changing moire effect. I'm expecting the MoMA to call any second.
In this video the effect has been sped up for clarity, however the same effect could be had with a high torque clockworks using the minute and second hand.
A moire pattern is caused by interference, more information is available here moire at wikipedia