Simple Way to Show Electron's Wave Properties?

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A simple way to demonstrate electron wave properties involves using the double slit experiment as a reference. Key components needed include a reactive whiteboard, a setup with two slits, and a device to emit electrons, commonly referred to as an electron gun. An electron gun can be sourced from disassembling old TV sets or oscilloscopes, which contain similar technology. Caution is advised due to the high voltages present in these devices, which can be life-threatening. Proper safety measures should be taken when conducting such experiments.
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I was wondering is there is a simple way to show electron's wave properties, by using the double slit experiment as a reference.

What I think I need:

White Board that's reactive of electrons
Something with 2 slits
Something that can shoot out electrons

For something that can shoot out electrons, what would that be? Can I just have a Y-wire with one end open to shoot out the electrons?
 
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I think the thing you're looking for is an electron gun. Even disassembling a very old TV-set (those really box looking ones) will yield one for you.

EDIT: on a secondary though, usually an oscilloscope also has an electron gun inside it
 
Be very careful if you decide to actually do that experiment. Those old TV-sets produce life threatening high voltages needed to accelerate the electrons.
 
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