![background image](http://html1.mh-extra.com/html/pasco/se-9654/se-9654_instruction-manual_3933139032.webp)
SE-9654
Zeeman Effect Experiment
30
012-14266B
Conclusions
1. If you wish to enter your answers using Capstone, create a new workbook page and label it “Conclusions”.
•
Double click the icon at the right that says “Text Entry Box” to open an empty text area.
•
Type in your answers to the following questions.
Questions
1. Do the mean values for the Bohr magneton from Table 2 and Table 3 agree with theory (9.27 x 10
-24
J/T)? Discuss fully.
2. When the current was on, was the center Radius Tool circle in the triplet the same as the Radius Tool circle for the B = 0
field? What does this show?
•
On the “Data Analysis” workbook page, select Run #2 at the bottom of the page. Move the playback slider to the begin-
ning of the run (all the way to the left). Using the “Create Measurement Tool” button, create three Radius Tools. Adjust
one of the circles so it is just outside of the outer k = 1 triplet. Adjust a second circle to just inside the inner k = 1 triplet.
Adjust the third circle to just outside the k = 0 triplet. Move the slider until the k = 1 triplet disappears.
•
NOTE: The triplet disappears when the polarizer has been rotated by 90° so you are seeing the light polarized perpendic-
ular to the magnetic field axis. You may need to move the three circles slightly because rotating the polarizer may move
the image slightly.
3. How many energy levels (separate circles) do you see now for the k = 1 band of circles? Does this agree with the discus-
sion in the theory section?
•
NOTE: It may help to use the magnifier. The outside bands are more clear with the k = 0 band, but the k = 0 inside bands
may not show if the k = 0 band is too close to the center.
•
Now move the playback slider to the end of Run #2 where the polarizer was removed.
4. Can you see all the bands without the polarizer? How many are there? Does it match theory?
•
Now select Run #3 at the bottom showing the interference pattern for the axial magnetic field (when the electromagnet
was parallel to the track). Start with the slider at the beginning and move it to the end. Recall that you rotated the polarizer
through 90° as you took the movie.
5. Do you see any change in the pattern? What does this tell you?
6. Why is all of this important?