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Apparatus of Franck-Hertz Experiment



0 ~ 3000 Get Latest Price



1 Unit


3-4 weeks

10 Unit per Month



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Product Description



  • No preheating for Argon gas tube

  • Multiple modes: manual data recording, oscilloscope viewing, or data processing (digital oscilloscope needed)

  • Visible Argon tube with backlight

  • Stable and reliable




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 a digital storage oscilloscope with computer interface. It is an ideal teaching apparatus for physics laboratories at 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. Calculate the 1st excitation potential of Argon atom



Description Specifications
Curve peaks ≥ 7
Franck-Hertz tube Argon gas, backlight illuminating, open side window
Filament voltage VF 1.25 ~ 5 V, continuously adjustable 3-1/2 digital display
Control voltage VG1K 0 ~ 6 V, continuously adjustable 3-1/2 digital display
Accelerating voltage VG2K 0 ~ 90 V, continuously adjustable 3-1/2 digital display
Decelerating voltage VG2P 1.25 ~ 5 V, continuously adjustable 3-1/2 digital display
Micro current measurement 1 μA, 0.1 μA, 10 nA, 1.0 nA, range 0.001 nA ~1.999 μA, 3-1/2 digital display


Parts List


Description Qty
Main unit 1 set (incl F-H tube, scanning voltage, current amplifier)
BNC cable 2
Power cord 1
Instruction manual 1
Apparatus of Franck-Hertz Experiment

Contact Us

Contact Person :Mr. James

Company:Lambda Scientific Systems, Inc.

Address:16300 SW 137th Ave, Miami, Florida, USA,33177


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