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.

Though we’re still galaxies away from having real lightsabers, the wonderful people in charge of Star Wars merchandising has given us the next best thing-LED flash light lightsabers. The Star Wars ...

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 ...