Kerr - June 24, 2016

Here is power related to distance of magnets. Where 0 is the foil surface.

This graph seems quite interesting. We achieved a total rotation of .11 degrees with one polarity and .15 deg with the opposite.

Here is Field strength versus power.

An aerial view of the setup so far

The most recent, and hopefully last, modification to the magnet holding apparatus. The Micrometer has a range of 25 mm.

The reason we aren's seeing a "V" shape in our B field vs Power graphs is most likely because we are not at the absolute minimum power, or rather the cross polarizers are not completely orthogonal with one another. In one direction of rotation we are allowing the light to be more perpendicularly polarized with the analyzer therefore decreasing the amount of light coming through. In the other direction we move farther away from a perpendicular crossing allowing more light to pass through.

We do however, Original excel file with this data set: Media:Pickoffdatagreen.xlsx