This paper briefly introduces the basic principles to measure plancks constant by photoemission and the three methods to measure cut-off voltage.
介绍了光电效应实验中通过确定截止电压测量普朗克常数的方法，并分析了实验中产生误差的原因，指出减小误差的方法。
This paper briefly introduces the basic principles to measure plancks constant by photoemission and the three methods to measure cut-off voltage.
介绍了光电效应实验中通过确定截止电压测量普朗克常数的方法，并分析了实验中产生误差的原因，指出减小误差的方法。
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