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

Select an option below to continue reading this premium story. Already a Honolulu Star-Advertiser subscriber? Log in now to continue reading. >> A large band gap means higher-energy photons, which in ...

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 ...

A Rutgers-led team of scientists has developed an eco-friendly, very stable, ultra-bright material and used it to generate deep-blue light (emission at ~450 nm) in a light-emitting diode (LED), an ...

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.

Light pollution blues: photographs of London taken on board the ISS in 2012 (left) and 2020 (right). The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et ...

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 ...