1. Gịnị bụ UV? Nke mbụ, ka anyị tụlee echiche nke UV. UV, ntụgharị ultraviolet, ntụgharị ultraviolet, bụ ebili mmiri eletrọnịkị nwere ogologo nm n'etiti 10 nm na 400 nm. Enwere ike kewaa UV dị iche iche na UVA, UVB na UVC. UVA: na ogologo wavelength sitere na 320-400nm, ọ nwere ike banye ...
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