When you flip a switch or power up your smartphone, the last thing on your mind is whether that light could be messing with ...

Light-emitting diodes (LEDs) are so ubiquitous that it's easy to forget just how much society relies on these underappreciated technological wonders. Yet, the history of the LED goes back further than ...

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.

This illustration demonstrates how bright blue LED light, shone through its complementary yellow phosphor, yields white light. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of ...