Just As seen gentle is composed of different colours that become obvious in the rainbow, the UV radiation spectrum is split into 3 regions named UVA, UVB and UVC. As daylight passes in the atmosphere, all UVC and most UVB is absorbed by ozone, h2o vapour, oxygen and carbon dioxide. https://andersonxfmeo.p2blogs.com/34634111/5-essential-elements-for-visual-positioning-uv-printer