The Application of High-Ranking Step-Differential in Physical Experiments

Liang Lizheng

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The Application of High-Ranking Step-Differential in Physical Experiments

更新时间：2026-05-27

- The Application of High-Ranking Step-Differential in Physical Experiments
- Vol. 14, Issue 4, Pages: 22-26(1997)
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- Online First：16 October 1997，
  
  Published：1997
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梁礼正. 高阶逐差在物理实验中的应用[J]. 广东工业大学学报, 1997, 14(4): 22-26.

Liang Lizheng. The Application of High-Ranking Step-Differential in Physical Experiments[J]. 1997, 14(4): 22-26.
梁礼正. 高阶逐差在物理实验中的应用[J]. 广东工业大学学报, 1997, 14(4): 22-26. DOI：

Liang Lizheng. The Application of High-Ranking Step-Differential in Physical Experiments[J]. 1997, 14(4): 22-26. DOI：

摘要

在光电效应法测普朗克常量的实验中，用３阶逐差确定光电管对各种单色光的伏安特性曲线的抬头点，可以精确到０．０１Ｖ，比作图法或其他方法精确．以此抬头点电压的绝对值作为光电管阴极材料对各种单色光的截止电压，则截止电压对于光照频率的相关因数高达０．９９９９以上，截止电压对于光照频率的线性关系的斜率以及由此斜率算出的普朗克常量，偶然误差仅为１％．可见，高阶逐差是一些物理实验中数据处理的较好方法．

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