"Ultraviolet (UV) light has wavelengths of 10 – 310 nm. The Sun is a source of ultraviolet energy. The UV portion of the spectrum is subdivided into UV-A, UV-B, and UV-C. UV-C rays are the most harmful and are almost completely absorbed by our atmosphere. UV-B rays are the harmful rays that cause sunburn. Although UV waves are invisible to the human eye, some insects, such as bumblebees, can see them." (Humboldt State University, 2014)


"Electromagnetic Spectrum". Humboldt State Geospatial Online, Humboldt State University. 2014.
Accessed February 1, 2019.