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Electrons lose energy to mercury atoms in discrete increments, providing direct evidence for quantized atomic excitation energies.
Franck and Hertz initially interpreted the observed threshold as ionization; its later interpretation as discrete excitation energy supplied the canonical quantum-level test.
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Repeated inelastic thresholds directly supported discrete atomic excitation energies.
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
wp-physics-franck_hertz_experimentnobel-franck-hertzThis is an authored directed relation from the source endpoint to the target endpoint.
The threshold spacing agreed qualitatively with the quantized-level picture central to the Bohr model.
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
wp-physics-franck_hertz_experimentnobel-franck-hertzEach relation below starts at this concept.
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