The purpose of this experiment was to observe the change in light intensity through polarizing filters and measure the transmission of light as a function of the angle between the axes.
PROCEDURE:
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| Polarization angle was set to 0 degrees by setting the two vertical to each other; The light source measured the "least" amount of light when it was 0 degrees. |
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| Angle and the light intensity was measured using the setup of the apparatus |
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| As the two polarizers were rotated at different angles, the intensity of the light had changed. Completely parallel showed the highest amount of light intensity, while the lowest showed perpendicular. |
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| Third polarizer was added perpendicular to the first polarizer. The second polarizer (middle) was adjusted to measure the angle for each measured intensity. |
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| Light intensity was measured by logger pro. |
DATA & ANALYSIS
Two Polarizers:
Three Polarizers:
CONCLUSION
As the the first polarizer is set to 0 degrees, the the second polarizers is perpendicular to the first and third one letting only the minimum amount of a light. When the second polarizer is moved to the 45 degree position the amount of light from the first polarizer is half and from the second to the third is half, giving its maximum value. Based on the given data, it can be concluded that the light intensity does depend on the angle of the polarization and depending on whether the polarizition is parallel or perpendicular, the amount of light is at its maximum or minimum.
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