824.1 Light waves and the coherent condition of waves I=NPAOVocA2 For light oscillation: E=E coS( @t +Pu) 122-2 PEI@ ac Er 6. The methods of obtaining the coherent waves ① wavefront division ② amplitude division 824.2 Youngs double slit experiment 1. Installation and the phenomena of experiment This is a typical method of wavefront division9 2 2 2 2 1 I = A v ∝ A r r ρ ω 6. The methods of obtaining the coherent waves 1wavefront division 2amplitude division §24.1 Light waves and the coherent condition of waves For light oscillation: cos( ) = 1 ω + φ 1 E E t 2 1 2 2 1 2 1 I = E v ∝ E r r ρ ω §24.2 Young’s double slit experiment 1. Installation and the phenomena of experiment This is a typical method of wavefront division