An experimenter at an optical research company finds it difficult to experiment, as the measuring device that determines the angle φ inside the mirror always interferes with light progression. In this case, it would be good to measure the angle δ outside the mirror. So how does β, the relative angle of reflection with respect to the angle of incidence, relate to the angle δ?

An experimenter at an optical research company finds it difficult to experiment, as the measuring device that determines the angle φ inside the mirror always interferes with light progression. In this case, it would be good to measure the angle δ outside the mirror. So how does β, the relative angle of reflection with respect to the angle of incidence, relate to the angle δ?

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