Theories of this phenomenon include Rayleigh-Sommerfield, and one device which makes use of it consists of concentric alternating black and white rings.
One variety of this effect produces Kossel lines, and Kikuchi lines are a result of this effect in transmission electron microscopes. Theories of this phenomenon include Rayleigh-Sommerfield, and one device which makes use of it consists of concentric alternating black and white rings. One equation describing it equates order times wavelength with twice the distance between crystal planes times the (*) angle, a law named for Bragg, and when this phenomenon occurs through a circular aperture it produces elliptical zones named for Fresnel. When this effect occurs in the far-field limit, it is named for Fraunhofer. For 10 points, name this phenomenon, the bending of light around obstacles.
One variety of this effect produces Kossel lines, and Kikuchi lines are a result of this effect in transmission electron microscopes.
{diffraction}