# Question on Heisenberg uncertainty principle

Nivlac2425

## Homework Statement

Particles pass through a single slit of width 0.2 mm in a diffraction setup. The de Broglie wavelength of each particle is 633 nm. After the particles pass through the slit, they spread out over a range of angles. Use the Heisenberg uncertainty principle to determine the minimum range of angles.

## Homework Equations

Heisenberg uncertainty principle
sin $$\theta$$= $$\lambda$$/W

## The Attempt at a Solution

I'm not sure exactly what a minimum range of angles mean. Is it all the possible angles through which the electrons can follow?
I believe I'm stuck on how to use the uncertainty principle to find an angle. I know that the equation for diffraction through a single slit might be useful.

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