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Natural ultraviolet light or UV is generated by the sun. UV is part of the light spectrum.
The full spectrum includes radio waves, infrared, visible light,
ultraviolet, x-rays, gamma rays and cosmic rays (listed from long wavelength at
the top to shorter wavelengths going down). Most sources of light generate
some UV.
For air, surface and water disinfection, UVC is generated by UV systems with
ultraviolet lamps which, in most cases, resemble ordinary fluorescent tubes.
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| Radio Waves |
| Infrared |
| Visible Light |
| Ultraviolet / UV |
| X-rays |
| Gamma Rays |
| Cosmic Rays |
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