From a Double-slits Experiment to See the Essence of Optical Interference and Diffraction

Research shows that many people understand interference and diffraction of light is not comprehensive.This paper puts forward a way and method to give a clear explanation of interference and diffraction,through dealing with the intensity distributions of light traveling through interference of young's double-silt and double-slits diffraction.Thus it expounds both relationship and difference between interference and diffraction,and aims at a further understanding of their essence.