[Taxlady]

I don't own any polarized glasses at the moment, but I did back in the 70s. I remember seeing patterns of dark in the windshields of almost all cars. I also saw it on many shop windows.

The polarisation in glass goes in a direction. It will let light through that is at the same angle or close. The dark patterns that I used to see, were because the polarization was done in two different directions. This was done when polarized sunglasses were very popular. It meant that you would be able to see through the windshield in the none dark areas. Which areas were dark depended on the direction of polarization in your sunglasses.

I imagine that the white puffs are some new way of doing something similar. Try taking off your polarized glasses and looking at the puffs through the glasses. Turn the glasses and see what happens to the pattern. Let us know what happens.