REL
파동,wave
전자기파,electromagnetic_wave
가시광선
가시광선
레이저,laser
복사,radiation
반사,reflection
( 물리학,physics or 물리,physics ... ccurr 물리physics esp. 광학,optics )
색,color
에너지,energy
밝기,brightness
광학,optics
플리커,flicker
파동,wave
전자기파,electromagnetic_wave
가시광선
가시광선레이저,laser
복사,radiation
반사,reflection
( 물리학,physics or 물리,physics ... ccurr 물리physics esp. 광학,optics )
색,color
에너지,energy
밝기,brightness
광학,optics
플리커,flicker
조명 jomyeong
light
빛
lighting =,lighting . lighting { 
lighting 
lighting lighting }
illimination =,illimination . illimination {illimination illimination illimination }
조명
lighting
illimination
lighting lighting lighting }illimination =,illimination . illimination {
illimination illimination illimination }조명lightingilliminationlight빛