Final answer:
Electron interference patterns demonstrate the wave-particle duality of matter, showing that electrons behave as both particles and waves.
Explanation:
The formation of interference patterns by electrons is best explained by the wave-particle duality of matter. When electrons exhibit wavelike behavior and create interference patterns, it indicates that matter does not strictly behave as just particles but also as waves. This concept was experimentally shown by scientists like C. J. Davisson and L. H. Germer using crystals as slits for electrons to pass through, resulting in interference patterns.
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