Light Through Liquid Crystals
Yes and no. The liquid crystal molecules do affect the polarization of light,
but they do it in rather a different way than the filters we discussed earlier. A polarizing
filter works by absorbing a particular component of the electric field...
Yeah, I remember--it's like a gate that only lets through light polarized in a
Right. Well, the liquid crystal molecules don't absorb anything; they let all
the light through. However, if they're arranged in the proper way, they can
"twist" the light--that is, rotate the plane in which it is polarized.
So if polarized light goes through the molecules, it comes out polarized in a
different direction--but would anything happen if the incoming light were
No--that's why the light is sent through that first polarizer before it enters
the liquid crystal.
What did you mean by "arranged in the proper way"?