（1）“等距离”法测波长 表1 “等距离”法测波长
作2D-
求出2D- 光速
（2）“等相位”法测波长 表2 “等相位”法测波长
作2D-
求出2D- 光速 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
六.实验结果
七.分析讨论（实验结果的误差来源和减小误差的方法、实验现象的分析、问题的讨论等） 八.思考题 1．本实验中，光速测量的误差主要来源于什么物理量的测量误差？为什么？ 答：误差主要来源于波长的测量误差。因为频率可以做到很稳定。 2．通过光速测量实验，你认为波长测量的主要误差来源是什么？为提高测量精度需做哪些改进？ 答：波长测量的主要误差来源是相位的测量误差。可采用高精度的相位计改进测量。 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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