To get through the hottest days of summer, here's how to read the UV index so you know when the sun is most dangerous.

Ultraviolet wavelengths, which range from 10 to 380 nanometers, are smaller and more energetic than those on the visible light spectrum. (Image credit: Ali Damouh/Science Photo Library via Getty ...

Wavelength Selection. Keyboard controlled by up-down keys. Wavelength Range. 200-1100 nm CE 1021. Wavelength Accuracy. 325-1100 nm CE 1011. Wavelength Precision. Within 1 nm. Wavelength Display. 0 ...

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

The Texas summer is predicted to be “ hotter than normal ” in Fort Worth. With a week of seven 90 degree days in a row, residents are bound to need some sun protection. However, the temperature ...

They have higher wavelengths but lower energy levels than other UV rays. They’re more penetrating than UVB rays, which means they can affect cells deeper in your skin.

Anyone who ever ended up with a sunburn knows violet wavelengths are real, as the Sun’s ultraviolet (UV) radiation is the reason you need to wear sunscreen, even though you can’t see those ...

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 ...