Using a TV Set to Show Electron Diffraction
We show the feasibility of constructing a simple set-up to demonstrate the diffraction of electrons starting from a standard TV set. Two concentric rings around a central maxima appears on the screen of the modified TV set corresponding to atomic planes (1, 0, 0) and (1, 1, 0) of a hexagonal structu...
| Authors: | , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2013 |
| Country: | Panamá |
| Institution: | Universidad Tecnológica de Panamá |
| Repository: | Repositorio Institucional de documento digitales de acceso abierto de la UTP |
| Language: | English |
| OAI Identifier: | oai:ridda2.utp.ac.pa:123456789/2370 |
| Online Access: | http://ridda2.utp.ac.pa/handle/123456789/2370 |
| Access Level: | Open access |
| Keyword: | Cathode ray tube electron diffraction Planck’s constant |
| Summary: | We show the feasibility of constructing a simple set-up to demonstrate the diffraction of electrons starting from a standard TV set. Two concentric rings around a central maxima appears on the screen of the modified TV set corresponding to atomic planes (1, 0, 0) and (1, 1, 0) of a hexagonal structure of graphite sample. A reasonable Planck’s constant value is determined through the slope of a plot of λd2 vs 1/V where we used the average Bragg wavelength for both diffraction rings for each value of accelerating voltage. Since wave particle behavior of matter is shown, we believe this simple set-up is useful for introductory physics courses at high school and undergraduate levels. |
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