The ultraviolet index measures the intensity of the sun's harmful rays. Learning how to read it can help you protect your ...

The UV Index provides a measure of the sun's ultraviolet radiation, a short wavelength of light invisible to humans, that can cause sunburns. Sunburns are a factor that can lead to deadly health ...

More information: Nahoko Fujimoto et al, Wavelength dependence of ultraviolet light inactivation for SARS-CoV-2 omicron variants, Scientific Reports (2023). DOI: 10.1038/s41598-023-36610-6.

The UV wavelength is the key player to why the rays are dangerous in high amounts. Short wavelengths move faster and are stronger, but not ALL the UV rays do reach the surface of the Earth.

But this ability appears to drop off around age 30, indicating that aging reduces the ability to see UV wavelengths. Some people can see much more of the UV light spectrum, however.

Mold is a constant problem. Can a UV light treatment take care of it in your home? The answer is complicated, and we're here ...

The UV wavelengths, or in simpler terms, the strength of the sun at the surface, typically range from 100 to 400 nanometers. The UV increases by 6 percent for every kilometer of elevation.

Ultraviolet (UV) light has wavelengths between 10 nm and 400 nm. The Earth’s stratospheric ozone usually blocks wavelengths below 280 nm. The ultraviolet light that reaches the Earth’s surface ...

Within this range, there are three bands, UV-A with wavelengths from 300 nm to 400 nm, UV-B with wavelengths between 280 nm to 315 nm, and UV-C with wavelengths from 200 nm to 280 nm. UV-C LEDs are of ...

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 ...

NASA has shared stunning views of Mars in ultraviolet wavelengths. The images of the red planet were taken by an instrument on its MAVEN spacecraft, which launched in November 2013.