Hello, I was wondering if any of you guys can tell me whether or not I did the following polarization problem correct. Problem: Polarized light passes through a sequence of two polarizers whose axis of polarization forms a 30 degree angle. The second polarizer has the same polarization as the incoming light before it hits the first polarizer. What fraction if the incident intensity emerges from the set of polarizers? The answer is 1/2. My attempt: I used the Law of Malus: S = S(i)*cos^2(θ) So I did this: cos^3(30) * cos^2(30) * S(i) = S The cos^3(30) comes from the average of the first two polarizers. As for the second part, I am not sure. I assumed that the problem says the angle is still 30° after the light goes through the first two. In the end, I get .49, which is close to the answer. However, I feel strongly that what I did is completely wrong. Is this correct?