These defective purple-appearing street lights have made a fair amount of buzz ... This process involves adding a phosphor layer to a blue LED, which, when powered on, appears to emit white ...

But LED lights can’t produce white without some ... In 2023, The Boston Globe reported several of the purple lights in the Massachusetts capital. They’ve also popped up in Vancouver and ...

There’s a purple-bluish glow coming from some of the lights above highways in Western Pennsylvania. It’s a bizarre look. What ...