- #1
sirzerp
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I'm a grad student and I got some recent results that I can't figure out. Thought I would post a question and see if I can get a quick answer.
I'm taking pictures of polarized system. Using a normal linear polarized filter that has a slip ring, so I take a picture, rotate the slip ring a few degrees and take another picture.
If I focus the camera on one of the interesting features of the system that I study, I get a dark band and bright band that cross each other. See attached figure. If I rotate the slip ring, the dark band and bright band rotate in lock step with the filter alignment.
My system has a lot of radial symmetry, so think this is the expected result.
Here's the rub, I focus on a different feature in the same system, everything else is the same and do the same actions. I still get a dark zone and bright zone that cross each other and a single frame looks very similar to my baseline.
Now, I rotate the slip ring a few degrees and take another picture. Everything looks the same but now the dark zone and bright zone has rotated the OPPOSITE DIRECTION between frames. If rotate the filter 9 degrees clockwise, my zones now rotate 9 degrees counter clockwise!
I think I understand linear polarization, circular, and elliptical polarizations.
What am I missing here? Can someone enlighten me? :)
Thanks in advance,
Sirzerp
I'm taking pictures of polarized system. Using a normal linear polarized filter that has a slip ring, so I take a picture, rotate the slip ring a few degrees and take another picture.
If I focus the camera on one of the interesting features of the system that I study, I get a dark band and bright band that cross each other. See attached figure. If I rotate the slip ring, the dark band and bright band rotate in lock step with the filter alignment.
My system has a lot of radial symmetry, so think this is the expected result.
Here's the rub, I focus on a different feature in the same system, everything else is the same and do the same actions. I still get a dark zone and bright zone that cross each other and a single frame looks very similar to my baseline.
Now, I rotate the slip ring a few degrees and take another picture. Everything looks the same but now the dark zone and bright zone has rotated the OPPOSITE DIRECTION between frames. If rotate the filter 9 degrees clockwise, my zones now rotate 9 degrees counter clockwise!
I think I understand linear polarization, circular, and elliptical polarizations.
What am I missing here? Can someone enlighten me? :)
Thanks in advance,
Sirzerp