SPRINGFIELD, Mo. (KY3) - You’ve probably noticed more colored headlights on area roads. And, our viewer Charolette did too. She wants to know, are those bright blue headlights legal? The answer is no.

It’s hard to believe that the first blue LED didn’t arrive until 1993. They look simple, but looks are deceiving (Fig. 1). 1. Image showing a blue InGaN-based LED with gold wire contacts (0.4 × 0.4 mm ...

Deep blue: Scientists have developed hybrid copper iodide crystals that emit deep-blue light. (Courtesy: Kun Zhu/Jing Li Lab/Rutgers University) A team led by researchers at Rutgers University in the ...