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It is desired to make a nonreflecting lens (n= 1.51) for an infrared radiation detector. If...

It is desired to make a nonreflecting lens (n= 1.51) for an infrared radiation detector. If the coating material has an index of refraction of 1.30, what is the minimum non-zero thickness of the coating for radiation with a frequency of 3.80 × 1014 Hz?

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