In Section 10.1.3 we talked about introducing an intrinsic phase shift ε between oscillato...

In Section 10.1.3 we talked about introducing an intrinsic phase shift ε between oscillators in a linear array. With this in mind, show that Eq. (10.18) becomes

β = (kb/2)(sinθ − sinθi)

when the incident plane wave makes an angle θi with the plane of the slit.