People were taken by surprise by the strange purple shade of streetlights, found to be something other than an alien attack ...

Faulty LED streetlights have been turning purple for ... the yellowish phosphor and silicon mixture that filtered the blue light to make it white began to crack and split, eventually falling ...

Most of the wonky streetlights, it turns out, came from an Acuity sub-brand called American Electric Lighting. Neil Egan, an Acuity representative, tells me that "the referenced 'blue light ...

The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et al/Science Advances/CC BY 4.0) The shift to LED street lighting is producing more blue-light pollution – an ...

New street lights along a protected sea turtle nesting area in Boca Raton appear to be amber LEDs, which are safer for turtles because they emit less blue light. In that 2016 report, the AMA ...

But why are once-white LED streetlights turning blue? It’s not due to the city trying out a new energy-saving light or to make it easier to see the road lines in the dark. The answer is simpler ...

The phosphor can absorb some of the blue wavelengths so that only the red and yellow ones come out, which makes the white light that streetlights primarily shine. But in this case, the phosphor ...

Though they're so common that we don't typically give them much thought, lights are fascinating elements of the modern world. By sending an electrical current through a conductor, extreme amounts ...

Many LED light bulbs used for street lights actually give off a purple-blue light by default. In order to split this light into the whole spectrum of colors that creates white light, manufacturers ...

A blue street light illuminates the intersection of Shawnee St. and E. Lynch Street in Durham, N.C., Nov. 26, 2022. Ethan Hyman [email protected] This series from The News & Observer’s ...

One thing that Bullough suggests pedestrians and drivers do to stay safe under purple streetlights—or any lights, for that matter—is to remove sunglasses and blue-light-filtering glasses when ...