I keep getting “de Broglie wavelength” questions wrong in Modern Physics. What's the trap?
expecting everyday objects to show wave behaviour (their λ is unimaginably small).
The usual trap: expecting everyday objects to show wave behaviour (their λ is unimaginably small). How to avoid it: matter waves matter only at the electron/atom scale. Go back to the definition — every particle has a wavelength λ = h/p, significant only for tiny masses.
Key point
de Broglie wavelength
Common mistake
expecting everyday objects to show wave behaviour (their λ is unimaginably small).
Memory tip
matter waves matter only at the electron/atom scale.
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