WEST LAFAYETTE, Ind. - A Purdue University study shows that targeting plants with red and blue LEDs provides energy-efficient lighting in contained environments, a finding that could advance the ...

Little natural light in your home doesn’t have to mean living without plants — if you invest in an LED grow light. These lights deliver a full spectrum of light, replicating what plants would get from ...

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 ...

With the invention of the first LED featuring a red color, it seemed only a matter of time before LEDs would appear with other colors. Indeed, soon green and other colors joined the LED revolution, ...

Making a blue LED was once thought impossible. Unlike red or green, producing blue light required a semiconductor with a much larger energy band gap. For decades, the right material didn’t exist—or at ...

Researchers have designed and tested ‘human-centric’ LEDs that emit different wavelengths of blue light depending on whether it’s daytime or nighttime, reducing the disruptive effect artificial light ...