Задача 40445.

Four polarizer are stacked so that each successive plane forms an angle of 30 ° with the plane of the previous one. On the light incident polarization plane of which coincides with the plane of the first polarizer. What percentage of the light intensity transmitted through the system polarizers less than the intensity of the incident light?

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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