······················白炽灯,光线柔和,再近也无紫外辐射,灯泡破碎了也无污染;·······························但是费电。····························································用于看书、学习,好·······································································
荧光灯,与其相反。································································只要离人体一米以上,也无紫外辐射了,用于日常照明,好