The distribution of intensity in the Fraunhofer diffraction
pattern of a slit and at an edge is measured. The results are
evaluated both from the wave pattern view point, by comparison with
Kirchhoff's diffraction formula, and from the quantum mechanics
standpoint to confirm Heisenberg's uncertainty principle.
- To measure the intensity distribution of the Fraunhofer
diffraction pattern of a single slit (e. g. 0.1 mm) and an edge.
The heights of the maxima and the positions of the maxima and
minima are calculated according to Kirchhoff's diffraction formula
and compared with the measured values.
- To calculate the uncertainty of momentum from the diffraction
patterns of single slits of differing widths and at an
edge and to confirm Heisenberg's uncertainty principle.
What you can learn about
- Diffraction uncertainty
- Kirchhoff's diffraction formula
- Measurement accuracy
- Uncertainty of location
- Uncertainty of momentum
- Wave-particle dualism
- De Broglie relationship