Question: Verify that the peak irradiance I 1 of the first ring in the Airy pattern for far-field diffraction at a circular aperture is such that
Verify that the peak irradiance I1of the first ring in the Airy pattern for far-field diffraction at a circular aperture is such that I1/I(0) = 0.0175. You might want to use the fact that

Gu) + - 3!4! Gu)? + J1(u) 2 1 2!3! 1!2!
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