I just completed this 60 second silent film as part of a nocturnal installation at this year's Latitude and Big Chill festivals, which will appear on a wall of water, alongside work by 10 other artists. The project was curated by Fallon Films.
I built small complex cardboard constructions to hang with string, and covered them with simple moire patterns and projected others onto them, using fans to keep them moving. I based the art direction on the idea that projecting black shapes will make the water momentarily disappear; and generated shapes on my photocopier which were used to interfere with the perfect 'loop' of the moire pattern.
Thanks to Tom and James for help with the edit!