and [Margaret Johnson], aka [Bitknitting] has been working on building her own LED plant light. She’s using a combination of red and blue LEDs that produce the ratio of light frequencies that ...

If your go-to acne-fighting product is always a pimple patch, you’re in luck. This red and blue light device comes with ...

Select independently determines what we cover and recommend. When you buy through our links, we may earn a commission. Learn more. When it comes to emerging skin care science, I’m a skeptic at ...

The latest fashion in PCs. Starting in the mid-2010s, RGB lighting adds flair to what has traditionally been a rectangular black box. Red, green and blue LED lights adorn any or all of the ...

Therefore, LEDs emitting red light cannot be used for white-light generation using phosphors; instead a short-wavelength ultraviolet, violet or blue LED is required. Early attempts to produce blue ...

For example, when red, green and blue LEDs are combined, they produce white light. Another method uses a blue LED and yellow or red phosphors. For a long time, LED bulbs were much more expensive ...