【摘要】 首先介绍了一种经典物距像距法测定薄凹透镜焦距的实验方法,并由交换透镜位置出现的偶然现象设计新的测定方法,推导出该方法的测量公式并进行可行性检验,分析了两种方法的优劣,最后对两种实验不同的现象进行分析,由理论验证实验现象。更多还原

【Abstract】 A traditional measuring method of focal length of thin concave lens was introduced and a new method occasionally found in experiment was designed in this paper.The new formula was derived and verified by experiment.Both methods were compared with each other and analyzed the different phenomenon.更多还原