Polarization

Statement of Purpose
To observe the change of light intensity through a polarizer as a function of the polarizer's angle.

Procedure

Setup the polarizer to 0 degrees so that maximum intensity passes.

LoggerPro sensor is setup at the other end

Data

The curve is roughly the same as a cos^2 function.

This time an additional polarizer is placed

Interestingly, when two polarizers are 90 degrees with respect to each other which means that no light can pass through two such polarizers, but when a third mediating polarizer is placed in the middle the light is polarized by 45 degrees. When it passes through the last polarizer it changes by another 45 degrees, summing to a total of 90 degrees. This means that the the outgoing light is 0 degrees out of phase with respect to  

Conclusion
Does the light from the fluorescent bulb have any polarization to it? If so, in what plane is the light polarized? How can you tell?

No, since the light that passes through the polarizer at all angles, the light can not be polarized

Does the reflected light have a polarization to it? If so, in what plane is the light polarized? How can you tell?

Yes, the polarizer is polarizing the light and decreasing the intensity of the light.