Lighting ???? ?? ?? ??? ? ??? ??? ?? ?? ????? ?????? ?????? ?? ??????? ?? light| ???? | radiance} here ?? ??????. Principles| Elements| Fundamentals Incorporating ?????| intensity| ??? ??? ???????? ????| Concepts| Rules ????????? comprise purpose ????? ?? atmosphere healthy ?????? ???? ????????? ????? ???? ????? ?? ???? ?????