一, Gịnị bụ oghere UV A oghere UV, nke a makwaara dị ka oghere ultraviolet, bụ oghere anya emebere ka ebufe ma lekwasị anya ìhè ultraviolet (UV). Ìhè UV, nke nwere ogologo ebili mmiri na-ada n'etiti 10 nm ruo 400 nm, karịrị oke ọkụ a na-ahụ anya na spectrum electromagnetic. UV lenses bụ ...
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