For the Life of Your Skin
Scientists classify UV radiation into three types or bands—UVA, UVB, and UVC. The ozone layer absorbs some, but not all,
of these types of UV radiation:
UVA: Wavelength: 315-399 nm. Strongest Wave Length and enters into your dermis skin cells.
UVB: Wavelength: 280-314 nm. Mostly absorbed by the ozone layer, some does reach the Earth’s surface & causes your skin to redden and burn.
UVC: Wavelength: 100-279 nm. Completely absorbed by the ozone layer and atmosphere.
UVA and UVB radiation that reaches the Earth’s surface contributes to the serious health effects listed above; it also contributes to environmental impacts. Levels of UVA radiation are more constant than UVB, reaching the Earth’s surface without variations due to the time of day or year. In addition, UVA radiation is not filtered by glass.
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