Service
Function and Applications
To investigate the generation of convergent and divergent light beams with the assistance of Fresnel's zone theory.
Equipment and technical data
- The diaphragm has a system of 40 light and dark rings.
- Limit circles between the rings have a diameter dn = 1.2 (n)0.5 mm (n = 1, 2, 3...40).
- Focal distance for He-Ne light: 56.9 cm.
- Dimensions (mm): 50 × 50.
Device name
Item No.
Item No. P2220402