单缝衍射法测量金属线胀系数

Measure the Expansion Coefficient of Metal with Single Slit Diffraction

本文介绍一个用单缝衍射法测量金属线胀系数的综合性实验,实验中对测量金属线胀系数的传统实验装置进行了改进,用单缝衍射法测量微小变化长度,从而提高了实验的测量精度,降低了实验误差,实验教学效果好,可以作为学生的综合性实验以满足实验课教学的要求。

Using the single slit diffraction method, we studied a synthesis experiment to measure the metal - line expansion coefficient. We improved the traditional experiment equipments in measuring the metal - line expansion coefficient. By the single slit diffraction method, we could scale the tiny variation at length, so it can increase the precision in measuring and decrease the experiment errors. Our method had a good effect in the experiment studying; it can be a synthesis experiment to the students and satisfy the experiment lessons＇ requirement.