Document
Diffraction at a slit and Heisenberg's uncertainty principle
Item no.: P2230100
The distribution of intensity in the Fraunhofer diffraction pattern of a slit 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.
영문 설명서
Tasks

  • quantum mechanical versus wave theory viewpoints are discussed observing light transversing a slit
  • a measured diffraction pattern can be explained by quite different theories
  • the famous "uncertainty principle" can be confirmed in this setup
Tasks

1. To measure the intensity distribution of the Fraunhofer diffraction pattern of a single slit (e. g. 0.1 mm). 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.
2. To calculate the uncertainty of momentum from the diffraction patterns of single slits of differing widths and to confirm Heisenberg's uncertainty principle.
학습목록

  • Diffraction
  • Diffraction uncertainty
  • Kirchhoff's diffraction formula
  • Measurement accuracy
  • Uncertainty of location
  • Uncertainty of momentum
  • Wave-particle dualism
  • De Broglie relationship
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