Sunburn - Side Effect Of Exposure To Sun
UV-C rays never reach earth and absorb by the atmosphere mainly in the ozone layer. Only a few percentage of UV-B rays reaches earth along with most part of the UV-A rays. The UV-A and UV-B rays that reach to land are seriously harmful to skin, if your skin exposed to them for a longer time. UV-B rays are absorbed by the upper dead layer of the skin and cause sunburn while UV-A rays penetrate the skin deep inside and cause problems like wrinkles, loss of elasticity and premature aging. These rays are also harmful to our eyes.
Wednesday, June 15, 2011
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment