There are four types of radiation – UVB, UVA, HEV and IR. UVB represents 5% of the suns radiation and contributes to redness and burning… it is mostly absorbed in the epidermis and 10% in the superficial dermis. It can cause direct damage to our DNA. It...
The Earth’s atmosphere does a pretty good job protecting us from harmful UV (ultraviolet) rays from the sun, but it doesn’t completely block them out. Most UV radiation is absorbed by the ozone layer. But the question is, how harmful are the UV rays to us?...
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