The skin and eyes are most sensitive to damage by UV at 265–275 nm , which is in the lower UV‑C band. At still shorter wavelengths of UV, damage continues to happen, but the overt effects are not as great with so little penetrating the atmosphere.
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UVA rays have the longest wavelengths, followed by UVB, and UVC rays which have the shortest wavelengths . While UVA and UVB rays are transmitted through the atmosphere, all UVC and some UVB rays are absorbed by the Earth’s ozone layer. So, most of the UV rays you come in contact with are UVA with a small amount of UVB.19 Ağu 2020
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