Zeeman Effect


The Zeeman Effect's complete system, including Power Supply and Electromagnet.


Zeeman Effect

Zeeman Effect

SE-9654   - 

Classic experiment in which students observe the interference pattern from a Fabry-Perot interferometer resulting from the spectral line of a mercury lamp in a magnetic field.

Also Available:



SE-9655   - 

This electromagnet produces over 1 Tesla.
Tunable DC Power Supply 6A

Tunable DC Power Supply 6A

SE-9656   - 

Tunable 6A power supply for use with Zeeman Effect's Hg lamp and Electromagnet.


In this experiment, the student observes the interference pattern from a Fabry-Perot interferometer which results from the 546.1 nm spectral line of a mercury lamp immersed in a uniform magnetic field. The magnetic field is varied from zero to nearly 1 Tesla.

Initially, the light is viewed along an axis perpendicular to the magnetic field axis. A polarizer is used to show the three lines due to light that is polarized parallel to the field axis and to show the six lines that are polarized perpendicular to the field axis. The pattern may also be viewed along the field axis where the light is circularly polarized.

Finally, the pattern that is polarized perpendicular to the field axis is used to calculate the Bohr magneton. All atomic moments are integral or half-integral multiples of the Bohr magneton.


  • CMOS Camera and Lens
  • Fabry-Perot Interferometer
  • Collimating Lens
  • Mercury Lamp
  • Electromagnet
  • Tunable DC Power Supply
  • Precision Kinematic Optical Mount
  • Horizontal Optical Mount
  • Track Length
  • Capstone Single User License


CMOS Camera and Lens
  • 1/3". 2M pixels, f=50 mm, RA=1.4
Fabry-Perot Interferometer
  • λ=546.1 nm
Interference Filter
  • λ=546.1 nm
Collimating Lens
  • f=125 nm
Mercury Lamp
  • 10 mA, 3W
  • 4A, 1T
Tunable DC Power Supply
  • 110V/220V, 6A
Precision Kinematic Optical Mount
  • Φ45 mm, 2D
Horizontal Optical Mount
  • Φ45 mm, travel = 36 mm, 3D
Track Length
  • 600 mm

Buying Guide


This product requires PASCO Capstone software and a Single User License is included with purchase.