SE-9654
Zeeman Effect Experiment
10
012-14266B
Setup
Position the Electromagnet
•
NOTE: A spirit level (“bubble” level) and protractor are recommended for use when aligning the electromagnet.
1. Place the electromagnet in a convenient location on a level surface. NOTE: The electromagnet weighs 72.5 pounds! If
possible, set aside a permanent place for the electromagnet in the laboratory so it will not need to be moved. Arrange the
electromagnet so that the locking thumbscrew on the base points away from the direction where the track will be placed
(see Figure 6).
2. Place a level on the base of the electromagnet. If necessary, adjust the screw feet under the base. Turn the level ninety
degrees and adjust the base again, if necessary.
3. Attach the connection block to the track and place the curved end of the connection block against the electromagnet base.
Loosen the locking screw on the base of the electromagnet. From the end of the track away from the electromagnet, look
along the center of the track at the electromagnet. Turn the electromagnet so that the gap in the electromagnet is parallel to
the track. (In other words, the electromagnet will be perpendicular to the track.) NOTE: Use a protractor to check the
alignment of the electromagnet with the white indicator mark on the connection block. Tighten the locking screw.
CAUTION: Do not look with your naked eye at the pen type mercury lamp when it is lit. The mer-
cury lamp has bright emission lines in the ultraviolet part of the spectrum which can damage
your eyes permanently. Look at the lit mercury lamp through the Interferometer/Filter Assembly.
Figure 6: Setup
DC Power Supply
Pen Type Mercury Lamp
Electromagnet
Polarizer/Lens Assembly
Interferometer/Filter Assembly
CMOS Camera
Connecting Block
Track
Lens