Layered Mesh Optical Illusion

[Erina]

I have a wire mesh waste paper basket and my eyes confuse when moving my position while the basket is still as the two mesh layers overlap to create confusing patters as my eyes attempt to focus, which is most noticeable the farther away observed.

It's nothing new, but what is this phenomena known as ?

[Halc]

They're known as Moiré patterns

[swansont]

When a grid's misaligned with another behind, that's a Moiré

https://xkcd.com/1814/

 

 

[Erina]

Thanks guys. Looks like Shape Moiré for my application.

 

I just discovered an entire genre of domestic lighting now !