Multiple modes: manual data recording, oscilloscope viewing, or software processing (optional)
Compact, stable, reliable, and affordable
Introduction
This LEAI-31Franck-Hertz experiment apparatus can demonstrate the existence of Bohr atomic energy levels. Experimental results can be acquired through manual data recording, or viewed on an oscilloscope, or processed using data-processing software (with optional interface and software). 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 an oscilloscope
2. Understand the process of electron-atom collision and energy exchange
3. Record measured data, plot curve, and calculate the 1st excitation potential of Argon atom
4. Automatic measurement of excitation potential by using software
Specifications
Curve peaks
≥ 5
Franck-Hertz tube
Argon gas
Filament voltage VF
1 ~ 5 VDC, continuously adjustable 3-1/2 digital display
Accelerating voltage VG2K
0 ~ 90 VDC, continuously adjustable 3-1/2 digital display
Micro current measurement
range 0.1 nA ~10 μA
Parts List
Description
Qty
Main Machine Unit
1(incl F-H tube, scanning voltage, current amplifier)
No preheating for Argon gas tube 