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用式测d或实验要保证什么条件

更新时间: 2020-07-05 00:00:00     

首先需要调节分光计水平,要求平行光管,载物台和望远镜处于同一水平面上。其次将待测光栅放在载物台中央,测量光栅衍射前几级衍射条纹的衍射角。最后通过光栅方程求出光栅常数即可。

关键词: 实验 保证 什么 条件

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