Задача 40551.

The crystal plate cut parallel to the optical axis has a thickness d = 0,25 mm and serves as a quarter-wave plate in the lambda = 0.53. For any more wavelengths in the visible range (0.40 microns - 0.76 microns), it is also a quarter wave plate? Assume that for all wavelengths of the visible spectrum difference in refractive index 0.0090.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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