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Character:UVA wave band can make many material emitting visible light. It can be used to distinguish mineral,stone and paper money as well as skin disease curing and stage decoration. It can also be used for insect killing.
UVB can help mineral metabolizing and vitamin D forming, so it can do good to health.
UVC Ultraviolet radiation has the most bactericidal efficacy in 240NM-280NM wave band, especially in 253.7nm. Its bactericidal principle is: Because the cell absorb wave light farthest in 250nm-270nm, in fact absorbed ultraviolet radiation has effect on DNA, which gets up a actinium. The energy of ultraviolet radiation is absorbed by alkali group in DNA to change and destroy microbial framework (DNA-riptide), then lead to riptide framework broken and the end of the organism or losing the function of copy. once the function is broken, sterilization or antisepsis is achieves.
