Franck-Hertz Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-AP-10740
Quick Answer: The Franck-Hertz Apparatus uses argon at room temperature and gives up to five minima with manual plotting, with the argon tube enclosed in the metal casing of the unit.
Last updated: October 2026
Key Features
- Argon tube that works at room temperature
- Up to five minima with manual plotting
- Argon tube enclosed in the metal casing, which shields it from stray voltages
- Results can be viewed on an oscilloscope or recorded by hand
- Compact unit
Technical Specifications
| Specification | Value |
|---|---|
| Weight | 16 lbs |
| Dimensions | 19 × 18 × 10 in |
| Gas | Argon, at room temperature |
| Minima | Up to five, by manual plotting |
About This Product
In this experiment, electrons in a tube holding a small amount of gas are accelerated towards an anode grid. A second electrode beyond the grid is held at a small negative potential to the anode, so only electrons with enough energy reach it. The current rises with the accelerating voltage but shows a series of dips as electrons lose energy exciting the atoms, and the spacing of the minima gives the ionisation potential.
Frequently Asked Questions
Does it need heating like the original mercury tube?
No. The original apparatus used mercury vapour heated to about 180°C, while this unit uses argon at room temperature, which is easier to control.
How many minima can be obtained?
Up to five minima can be obtained with manual plotting. The results can also be viewed on an oscilloscope.
Related: Advanced Physics, Foucault Pendulum Apparatus, Photoelectric Effect Apparatus, Laser Optics Demonstrator and Optics.
For a quotation on the Franck-Hertz Apparatus, contact Science Lab Export.
