There’s even a purple mood light that allows you to control ... a photocatalytic filter and ultraviolet (UV) germicidal lamp with virus-killing properties. What to Look for When Buying a ...

"Though the storm appears red to the human eye, in this ultraviolet image, it appears darker because high-altitude haze particles absorb light at these wavelengths," NASA wrote. "The reddish ...

Another is to grow cells in single-use reactors, which is wasteful. Ultraviolet (UV) light is another. Yet until recently, generating enough UV-C light, which is required for decontamination ...