An aperture consisting of a single slit and a complementary strip (wire) is illuminated with a laser beam. The corresponding diffraction patterns are measured according to position and intensity with a photocell which can be shifted.
Benefits
surprisingly a slit and a wire show basically the same diffraction pattern
measurements prove a theorem that sounds awkward at first glance
sturdy setup allows good reproducability of results
Tasks
Determination of the intensity distribution of the diffraction patterns due to a slit and complementary strip (wire).
Determination of the intensity relations of the diffraction pattern peaks for the single slit.
Babinet's theorem is discussed using the diffraction patterns of the slit and the complementary strip.