Uses of long-wave ultraviolet lamps: Ultraviolet light is a kind of light wave invisible to the naked eye, which exists outside the ultraviolet end of the spectrum, so it is called ultraviolet light. It is a kind of light wave, which is divided into A, B, and C bands according to different wavelength ranges. The wavelength of ultraviolet rays in the A band is between 320 and 420nm, and its...