What signature phenomenon on a screen confirms the wave nature of matter in the double-slit experiment?

Answer

Creation of an interference pattern.

When quantum entities like electrons pass through the double slits, they create an interference pattern on the screen, which is a phenomenon exclusive to waves.

What signature phenomenon on a screen confirms the wave nature of matter in the double-slit experiment?

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Wave Particle Duality Explained | Perimeter Institute for Theoretical ...

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