To disinfect a surface, you can illuminate it with a blast of ultraviolet (UV) light, which is bluer than the human eye can see. But to specifically inactivate SARS-CoV-2, the virus that causes ...

Animals with ultraviolet color patterns can be found all over nature. Here’s what we know about what purpose these patterns serve.

Ultraviolet has very short and energetic wavelengths that are shorter than violet on the visible spectrum. But can people see UV? When you purchase through links on our site, we may earn an ...

But in the early 2010s, Columbia University medical physicist David Brenner discovered that a type of UV light with a shorter wavelength than what had previously been used, known as far-UVC or far ...

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.