what did the franck hertz experiment prove

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1. Franck-Hertz Experiment

   

2. Franck-Hertz Experiment

   

3. Franck Hertz Experiment Using Mercury or Neon

   

4. Franck Hertz Experiment Using Mercury or Neon

   

5. Franck-Hertz's experiment by 상우 배 on Prezi

   

6. Franck-Hertz Experiment