1.phenomena of interference and coherent light 1)Phenomena of interference 2 the condition to produce interference phenomena a)why we can't see the interference from common light source The many atoms ordinarily radiate in an unsynchronized and random phase relationship b) Coherent light sources? Same frequency Constant phase difference Same polarization (oscillation directionSame frequency Constant phase difference Same polarization (oscillation direction) 2) the condition to produce interference phenomena a) why we can’t see the interference from common light source 1.phenomena of interference and coherent Light The many atoms ordinarily radiate in an unsynchronized and random phase relationship. b) Coherent light sources? 1) Phenomena of interference