Understanding UV Radiation: What Does 'UV' Stand For?

The V in UV stands for ultraviolet. Ultraviolet radiation is a type of electromagnetic radiation with a wavelength shorter than visible light, but longer than X-rays. It is invisible to the human eye, but can be detected by some animals, such as bees and birds. Ultraviolet radiation is used in a variety of applications, including sunlamps, black lights, and medical imaging.