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Electron diffraction

Electron diffraction

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Subject Science
Grade Level Grades 6-12
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About This Lesson

The electron gun shoots a beam of electrons across the tube.
The beam colides with a thin piece of graphite and the electrons diffract forming diffraction rings on the circular piece of fluorescent material at the far side of the tube.
Moving the slider to the right increases the accelarting voltage and so reduces the electron wavelength which means smaller diffraction rings.

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