ANALYSIS AND DISCUSSION ABOUT THE EXPRESSION OF"MISSING ORDERS"IN MULTI-SLIT DIFFRACTION
In the teaching of college physics,some textbooks and lecture describe the overlap-ping of interference fringes and diffraction fringes in multi-slit diffraction by referring to the phenomenon of"missing orders"when the interference maximum coincides with the diffrac-tion minimum.This means that the interference maximum that should appear is missing due to the effect of the diffraction minimum.However,is there really a lack of extreme interven-tion?In-depth analysis and experiments show that the expression"missing order"is mainly based on naked visual observation,which is a less rigorous but vivid description.From a more rigorous point of view,the so-called"missing order"is actually the"splitting"of interference maxima the minimal diffraction,causing the original interference maximum to split,resulting in a decrease in intensity and a narrowing in width,and making it difficult to detect visually.
interference of lightmulti-slit diffractionmissing order
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