干涉现象是指同振幅、频率和初位相的两列(或多列)波的叠加合成而引起振动强度重新分布的现象。在波的叠加区有的地方振幅增加，有的地方振幅减小，振动强度在空间出现强弱相间的固定分布，形成干涉条纹。
双缝衍射是指被单缝衍射调制的双缝干涉现象。
Double slit diffraction is the double slit interference phenomenon modulated by single slit diffraction.
光子被散射所引起的效应足以抹掉任何干涉现象。
The effect of the photons being scattered is enough to smear out any interference effect.
本文从理论上阐述了光干涉现象中的非相干叠加问题；
This paper expounds the problem of incoherent superposition in the interference of light in terms of theory.
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