WHAT IS ULTRAVIOLET RAYS ?
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ultraviolet rays are normally or commonly known as UV rays these are the rays which are derived directly from the sun falls directly on the earth in a medium of ozone layer
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Ultraviolet is a form of electromagnetic radiation with wavelength from 10 nm to 400 nm, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun...
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