INTERACTIVE EXAMPLE
© Copyright, Department of Physics, University of Illinois at Urbana-Champaign
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Uncertainty Principle I



Some particles pass through a single slit of width W = 0.17 mm. After the particles pass through the slit they spread out over a range of angles. The de Broglie wavelength of each particle is l = 561 nm. Use the Heisenberg uncertainty principle to determine the minimum range of angles.

q = rad