莫尔条纹的观察与测量

Observation and Measurement of Moiresilk

当两块粗光栅以适当的位置放置时,可以观察到莫尔条纹。当移动其一时,莫尔条纹也随之移动,利用此现象可以进行精密测量。利用自制的粗光栅进行了测试,效果较好。介绍了粗光栅的制作方法、莫尔条纹的基本原理与现象,进行了实测数据对理论的验证。

The moiresilk can be obtained with two coarse gratings overlapping each other. When moving one of the two gratings,we can observe the moiresilk to move together. Precise measurements can be taken in this way. The author introduces a method of preparing simple gratings with such equipment as computers, with which some experimental data are measured to verify certain theories.