Understanding of ultraviolet light

Ever day we can gain The forecast for ultraviolet rays index from meteorological department. This is precisely the time when we need to be more vigilant and more aggressive in our actions to
took some measures to solve the prophylactic wrok according to ultraviolet rays index. But in here we are believe that the ultraviolet is not useless. some people using ultraviolet light to help them finish work. the uv led strip generate ultraviolet light to server for human beings .
But beyond that base on ultraviolet rays index , we might want to consider handing this overuse shone and caught the ultraviolet light. at time we will have a try to make good use of ultraviolet rays for the appropriate period. the intensity of ultraviolet rays is variety in whole day, we will pay attention to that 10.30am-3.00pm. But it is not so absolute because different climate changes can get a different ultraviolet rays index .