Chicago Tribune

Chicago’s night sky is about to become an orange memory, as the city nears end of LED streetlight replacement. But are the new lights better?

For almost two generations of Chicagoans, orange has been the color of night. High pressure sodium vapor lights, which create a glow reminiscent of a tire fire, have lit Chicago since the 1970s. They ...
EDN

High Brightness Orange LED

Avago Technologies added another surface mount auto focus lamp, the ASMT-FJ10-ADH00. It is a high performance device which is a high brightness orange LED light source.Avago Technologies added another ...
Chicago Tribune

Chicago starts replacing lights that have shrouded city in orange glow

Almost four decades after the orange glow first took over Chicago’s night skies, the city’s Transportation Department is taking steps toward converting streetlights back to a more natural — and less ...
Gizmodo

Watch an LED Light Change Color In Liquid Nitrogen

Stick a red or orange LED light into liquid nitrogen and the color will change. Why would cooling down an electrical device give it a higher-energy light? Find out! Above you can see footage of an LED ...