KnowraFresnel numberLinked fromLinked fromThe 4 pages that link to Fresnel number, each with the reason it gives.All 4Related 3Compared with 1Fraunhofer diffractionRelated: It indicates whether a setup is near-field or sufficiently far-field for Fraunhofer treatment.Fresnel diffractionRelated: Its value indicates whether finite-distance curvature significantly shapes the pattern.Fresnel integralsRelated: It indicates when the quadratic-phase effects captured by Fresnel integrals matter.