Light bouncing off one disco ball looks cool...if you’re at a middle school dance. Light bouncing off 50 disco balls? That’s a work of art. Or at least it is when you use multiple projectors and 3-D ...

3D projection mapping and very complicated math make 50 disco balls project orderly light patterns. Kyle–who defines himself as “an artist working with code”–and Jonas, a creative technologist at ...

Ah, disco. That lamentable fad turned the Bee Gees from a kinda cool, kinda psychedelic band into a conduit for polyester, all that damn color, roller skates, and strobe lights. And what's left of it ...