Figure P.l 1.28 shows, in one dimension, the electric field across an illuminated aperture...

Figure P.l 1.28 shows, in one dimension, the electric field across an illuminated aperture consisting of several opaque bars forming a grating. Considering it to be created by taking the product of a periodic rectangular wave h(x) and a unit rectangular function f(x), sketch the resulting electric field in the Fraunhofer region.