What is ultraviolet light, and where does it come from? Learn how UV radiation is classified, measured, and used in medicine, ...

In fact, violet (along with the rest of the colors in a naturally occurring rainbow) has something purple doesn’t—its own wavelength of light. Anyone who ever ended up with a sunburn knows ...

As a result, purple and magenta are known as "nonspectral" colors, because they don't really exist as actual electromagnetic radiation. Nonspectral colors like purple are made of two wavelengths of ...

Visible' light-emission device technology is reaching its maturity, and many groups have shifted their research focus towards the shorter-wavelength UV devices. This interest is fuelled by the ...

Because UV light with wavelengths less than 360 nm does not penetrate the eye’s cornea, this suggests that our eyes sense and adapt to the deep violet visible wavelengths in natural light.

It’s called “far-UVC,” a type of ultraviolet light, at wavelengths of roughly 200 to 235 nanometers, that can kill the vast majority of airborne pathogens it targets, without damaging human ...

Biofluorescent creatures generate their glow with structures that absorb high-energy wavelengths of light, such as UV, violet or blue, then emit the light in a lower-energy wavelength. Researchers ...