[Tom Scott] ran across an interesting visual effect created with Moiré patterns and used for guiding ships but we’re sure it can be adapted for hacks somewhere. Without the aid of any motors ...

[ChrysN] put the effect to work with this spinning Moiré lamp build. It’s a build that can be achieved with scrap-bin components. An LED-encrusted PC cooling fan is used as the base of the lamp ...

Typically made from silk, this textile has a warped visual effect that is achieved by applying heat and pressure rollers until it looks almost like ripples on a pond. In physics and math, rippling ...