Traditionally, paved roads and pedestrian walkways have been illuminated by streetlights emitting a bright white, orange, or yellow glow. The aim is visibility, not aesthetics, and rarely will ...

The utility said it purchases LED lighting from several different ... according to a story published in Scientific American. The purple lights are not for aesthetics. They're a manufacturing ...

The aim is visibility, not aesthetics ... coating begins to degrade or delaminate, the blue LED can shine through unencumbered and appear as purple or violet. There could be several causes ...