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Differenciate btw UV-A and UV-B |
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Answer» ference Between UVA and UVB Rays. The sun emits two types of ULTRAVIOLET (UV) radiation that REACH our skin: ultraviolet A (UVA) and ultraviolet B (UVB). ... All light rays, including UVA and UVB rays, have different wavelengths, measured in nanometers, or “nm” for short. |
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