Diffraction at a stripe - Babinet's theorem

Principle

Babinet's theorem states that complementary objects (slit ridge or wire) provide diffraction patterns that are identical outside the central maximum.

Benefits

• Curriculum-relevant DEMO experiment in optics
• Equivalence to corresponding student experiment
• Stable optical bench
• Compact, simple set-up

Tasks

• Diffraction at a bar - Babinet's theorem