According to the usual explanation, polarized lenses work by only allowing light with a specific kind of polarization. It’s a simple explanation, and makes a lot of sense.
Why is it then, than when I look at a screen with two polarized glasses, one at an angle from the other, the image does not dim in the overlapping region, when it does in the glass closer to my eyes?
In: 3
Think of waves of light kind of like pieces of paper. They are very thin, basically infinitely thin, but they do vibrate in a plane which makes them wide.
If you have a bunch of vertical slits and you throw a bunch of random pieces of paper at those vertical slits, at least a few of them will happen to be upright and will be able to slide through. But if you place a bunch of horizontal slits right behind those vertical slits, then suddenly there is just a bunch of little holes and no real width to them. So none of the pieces of paper will be able to slide through at all.
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