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3B Scientific, UE5010500-230, Experiment for Atomic Physics: Electron Diffraction, 230 V, 50/60 Hz
UE5010500-230 Includes Only:
Features:
Objective: Observe the diffraction of electrons on polycrystalline graphite and confirm the wave nature of electrons
The diffraction of electrons on a polycrystalline graphite foil provides evidence for the wave nature of electrons. It is possible to observe two diffraction rings surrounding a central spot on the axis of the beam on the fluorescent screen of the electron diffraction tube. These rings are caused by the diffraction of electrons at those lattice planes of the microcrystals in the graphite foil that satisfy the Bragg condition. The phenomenon is similar to the results obtained in the Debye-Scherrer diffraction of X-rays by a crystalline powder.
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