Moiré Pattern of Two Fresnel Zone Plates
Moiré Pattern of Two Fresnel Zone Plates
The Moiré pattern formed using two displaced Fresnel zone plates illustrates the straight line interference fringes produced by interfering two spherical waves having the same radius of curvature. The spacing of the straight line pattern depends on the separation between the centers of the two Fresnel zone plates, just like the spacing of interference fringes depends upon the separation between the two point sources.