Задача 40197.

If between the crossed polaroids third place, the optical axis of which makes an angle of 15 ° with the optical axis of the analyzer, the field of view brighten. How many times will change the intensity of the transmitted light on the magnitude of the intensity of natural light? Loss of light by reflection and absorption neglected.

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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