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 probably seen ...

It all started with a gift idea: a star-field lamp in the form of a concrete sphere with lightpipes poking out where the stars are, lit up from the inside by LEDs. When you’re making one of these, ...