UV radiation
UV radiation : Solar UV radiation is waves of energy generated from the sun which can cause sunburn, pre-mature ageing of the skin and cancer. Splar UV radiation can be divided into three wavelength bands: UVA (315 nm - 400 nm), UVB (280 nm - 315 nm) and UVC (100 nm - 280 nm). The earth's ozone layer absorbs all of the UVC and much of the UVB
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