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mLine 1:
Line 1: − {{merge|UV}}+ − + + +
merge candidate since June with no discussion
'''Ultraviolet''' (or '''UV''') is [[electromagnetic radiation]] in the wavelength range of 4 to 400 nanometers, shorter wavelengths than that of visible light. The [[sun]] produces UV, which is commonly split into three bands: [[UVA]],[[UVB]], and [[UVC]].
'''Ultraviolet''' is [[electromagnetic radiation]] in the wavelength range of 4 to 400 nanometers. It is usually abbreviated as [[UV]].
UVA is not absorbed by [[ozone]]. UVB is mostly absorbed by ozone, although some reaches the Earth. UVC is completely absorbed by ozone and normal [[oxygen]].
[[category:physics]]
[[category:physics]]