College Physics ›› 2016, Vol. 35 ›› Issue (7): 28-30.

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Testing the Planck constant by reasonably defining the stopping voltage

YU Lei,DUAN Huo—lin,LIU Bin,ZHANG Li   

  1. Mechanical Engineering College,Shijiazhuang,Hebei 050003,China
  • Received:2015-09-29 Revised:2015-10-25 Online:2016-07-20 Published:2016-07-20

Abstract: A new method is applied to find the stopping voltage in the experiment of testing the Planck constant in terms of the photoelectric effect.W ith this method,the experiment precision can be greatly improved.

Key words: photoelectric effect, Planck constant, stopping voltage, slope method