Do you know any source of UV radiation?

Sources of ultraviolet radiation are mercury, xenon and other gas discharge lamps. Part of the spectrum of solids heated to 3000K is in the ultraviolet range. Stars, the Sun also emit ultraviolet radiation ..

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.