Franck-Hertz Calculator
Analyze Franck-Hertz experiment parameters and atomic excitation
About the Franck-Hertz Experiment
The Franck-Hertz experiment (1914) provided evidence for quantized atomic energy levels. Electrons accelerated through a gas can only excite atoms when they have sufficient energy, leading to periodic dips in current.
Key Concepts:
- Inelastic collisions occur at E = n × E₀
- Current minima at peak voltages
- Emitted photon: λ = hc/E₀
- Nobel Prize in Physics 1925
Typical Elements:
- Mercury: 4.9 eV (classic demonstration)
- Neon: 18.7 eV (visible orange glow)
- Argon: 11.6 eV
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.