Diffraction of light at a slit and an edge
Monochromatic light is incident on a slit or an edge. The intensity distribution of the diffraction pattern is determined.
- learn that the transition region from light to shadow is not a sharp line, but a diffraction pattern
- you can make use of diffraction patterns to determine properties of the objects causing them
- simple setup with very few components
Lens holder
Lens, mounted, f -50 mm
Slit, adjustable
Screen, metal, 300 x 300 mm
Laser, He-Ne, 0.2/1.0 mW, 230 V AC
Si-Photodetector with Amplifier
Control Unit for Si-Photodetector
Measuring tape, l = 2 m
G-clamp
Meter scale, l = 1000 mm
Digital multimeter 2005
Connecting cord, 32 A, 750 mm, red
Connecting cord, 32 A, 750 mm, blue
Adapter, BNC-plug/socket 4 mm
Barrel base expert
- Measurement of the width of a given slit.
- Measurement of the intensity distribution of the diffraction pattern of the slit and of the edge.
- Intensity
- Fresnel integrals
- Fraunhofer diffraction