I see a lot of correct comments here. I work in the UVC disinfection industry and the best way I describe it to people is basically the Sun produces UV-A, UV-B, and UV-C. Because of C’s wavelength, it never makes it through earths atmosphere, thus nothing on earth has a resistance to it. It’s pretty cool how UVC has been used since the late 1800s to help with outbreaks and now it’s used in almost every operating room to quickly disinfect in between surgeries to prevent hospital acquired infections. Hope that helps!
brad_y t1_jcmuzj2 wrote
Reply to If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? by Critwhoris
I see a lot of correct comments here. I work in the UVC disinfection industry and the best way I describe it to people is basically the Sun produces UV-A, UV-B, and UV-C. Because of C’s wavelength, it never makes it through earths atmosphere, thus nothing on earth has a resistance to it. It’s pretty cool how UVC has been used since the late 1800s to help with outbreaks and now it’s used in almost every operating room to quickly disinfect in between surgeries to prevent hospital acquired infections. Hope that helps!