How Does De Broglie's Theory Explain an Electron's Wave-Particle Duality?

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Anithadhruvbud
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I can't understand how de broglie proves that an electron can have wavelength and momentum just like a photon,
 
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Anithadhruvbud said:
how de broglie proves

What do you mean by "proves"? We know from the experiments that particles can behave like waves, there is nothing to prove - all we have to do is to describe this behavior. De Broglie was the first to postulate this is how they behave to explain observed properties, but he didn't "prove" anything.
 

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