Diffraction at a double slit

Principle

When monochromatic light strikes a double slit, intensity minima and maxima appear behind it on a screen. The slit width and its slit centre distance can be determined from their positions at a known wavelength.

Benefits

• Curriculum-relevant DEMO Experiment in optics
• Equivalence to the corresponding student experiment
• Stable optical bench
• Compact, simple construction

Tasks

• Diffraction at a double slit