PASCO OS-8533A POLARIZATION ANALYZER User Manual
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Polarization Analyzer
Experiment Setup
Select the Sensors and Set the Sample Rate
•
Refer to DataStudio on-line help for detailed information on selecting sensors and changing the sample rate.
1. Set up the Rotary Motion Sensor for high resolution (for example, 1440 Divisions per Rotation). Select Large
Pulley (Groove) for the linear calibration (if you are using a PASport Sensor, this step is unecessary).
2. Set the sample rate of both sensors to 20 Hz, or 20 measurements per second.
Select the Display
•
Refer to DataStudio on-line help for detailed information selecting and changing displays.
1. Select a Graph display.
2. Set the axes of the Graph display so light intensity is on the vertical axis and angular position is on the horizon-
tal axis.
Prepare to Record Data
•
Refer to DataStudio on-line help for detailed information on monitoring and recording data.
1. Turn both Polarizers so they are at the same beginning angle (e.g., zero degrees).
2. Start monitoring data.
3. Rotate one Polarizer back and forth until the transmitted light intensity is maximum.
4. Stop monitoring data.
Record Data
1. Start recording data.
2. Slowly rotate the Polarizer on the Polarization Analyzer in the clockwise direction. Continue to rotate the Po-
larizer until you have made one complete rotation (360 degrees).
3. After one complete rotation, stop recording data.
Analyze the Data
•
Refer to the on-line help for DataStudio detailed information on creating and displaying calculations and using
DataStudio for data analysis.
1. Use the Experiment Calculator in DataStudio software to create a calculation of the cosine of the angle between
the Polarizers.
2. Repeat the procedure to create a calculation of the cosine
2
of the angle of the Polarizers.
3. Use the Graph display to examine the plot of light intensity versus angle.
4. Change the Graph display to show the plot of light intensity versus the cosine of the angle, and then change the
Graph display to show the plot of light intensity versus the cosine
2
of the angle.
5. Use Data Studio software to determine the relationship between the light intensity and the cosine
2
of the angle.