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Electrons Fired at a Maltese Cross

You need to view this video with the lights off as the glow on the tube is quite faint.

It was thought that this was a good demonstration of the particle-like nature of electrons because of the clear and crisp edges of the shadow. However the de Broglie wavelength of an electron is so small that even if there are diffraction effects they would not be easily seen with this equipment. Still in an historical context I think the demonstration is useful.

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