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what type of radiation is light with a wavelength of 1nm
A light with a wavelength of 1 nm is an ultraviolet radiation.
what is untraviolet radiation used for
UV radiation is widely used in industrial processes and in medical and dental practices for a variety of purposes, such as killing bacteria, creating fluorescent effects among other things

Question: what are some sources of the radiation
Self-contained rewrite: what are some sources of uv radiation