Arago's (Poisson's) spot

6C20.10A | Ga3
Catalog: 
6C20.10A
Location: 
Ga3
Room: 
PS F175
Quantity: 
1
3
  • Basic Setup.
    Basic Setup.
  • Laser and Lens.
    Laser and Lens.
  • Disks and Sphere.
    Disks and Sphere.
  • Poisson's Spot.
    Poisson's Spot.
Description: 

Shine a diffused laser beam at a small sphere or disk. The projected image shows Argo's spot.

Instructions: 

Mount a laser and either a small disk or sphere on opposite ends of an optical bench. Mount the diverging lens in front of the laser. Adjust so that the laser beam completely surrounds the target disk or sphere.