Ultraviolet light, or UV, is a part of the electromagnetic spectrum with a wavelength ranging from 100 to 400 nanometers. Thus, it is shorter than visible light but longer than X-Rays, as shown below.
Ultraviolet is further classified into 3 wavelength ranges:
- UV-C, from 100 nanometers (nm) to 280 nm (Referred to as Germicidal Light)
- UV-B, from 280 nm to 315 nm (Referred to as Sunlight)
- UV-A, from 315 nm to 400 nm (Referred to as Blacklight)