Решение задачи по физике раздел 2 пункт 53 оптика

53. In light of the diffraction grating white light spectra of the second and third orders partly overlap. At what wavelength in the spectrum of the second order is imposed purple border (λ = 0,4mkm) third-order spectrum?

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)