Franck-hertz tries with

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Franck-hertz tries with
Undervisningsmateriale Fysik undervisningsmateriale Atomic Physics Learning Activities
Franck-Hertz's experiment is one of the best ways to show the quantum properties of atoms. The experiment verifies the excitation energy of the Hg atoms through collisions with free electrons. Franck-Hertz tubes consist of an oxide cathode, gallery anode and a collection electrode. The evacuated tube contains a drop of Hg. Before starting the measurements, the pipe must be heated to 200 °C, partly to increase the pressure of the Hg steam and partly to obtain a sufficient probability of collision. When the temperature in the tube has become constant, the cathode is heated and a direct voltageMore Product Information
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