# What would be the associated wavelength of the particle if its velocity is zero?

What will be the wavelength of a particle whose velocity is zero?

According to de Broglie's hypothesis, then the wavelength would become infinite as the momentum is zero. But, I think for a stand still particle, its particle nature should be more dominant, as at that moment it is highly localized.

• @user137271 Indeed, they seem to be well defined. But they are only well defined on the human scale. If you actually measure its position and momentum and multiply the measurement errors (uncertainties), you'll get much larger product than $\sim\hbar$ (many orders of magnitude larger!). Thus, it still doesn't contradict the uncertainty principle. – Ruslan Nov 29 '16 at 16:46