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Old 07-27-2009, 10:39 AM
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Default Do you know these about Ultraviolet Radiation (UV rays)

UV rays consists of invisible rays from the sun ,including: UVA, UVB and UVC. UVC rays are not concerned often,as they are absorbed by the upper atmosphere and never reach the surface of the earth. UVB rays are the ones that do harm to the skin and can damage the eyes. UVA rays are mainly absorbed within the lens of the human eyes.
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