The LEAI-32 Franck-Hertz experiment apparatus can demonstrate the existence of Bohr atomic energy levels. Experimental results can be acquired by manual data recording, or viewed on an oscilloscope, or processed using data-processing software (optional). It is an ideal teaching apparatus for physics laboratories in colleges and universities.

Using this instrument, the following experiments can be conducted:

1. Observe the relationship curve between plate current and accelerating voltage on oscilloscope

2. Understand the processes of electron-atom collision and energy exchange

3. Record measured data, plot curve, and calculate the 1st excitation potential of Argon atom

4. Measure the 1st excitation potential by using software (optional)