Bragg planes

Bragg planes are imaginary layers within a crystal where atoms are arranged in a regular pattern. When X-rays are directed at a crystal, they can reflect off these planes. The angles at which this reflection occurs, known as Bragg angles, depend on the spacing of the planes and the wavelength of the X-rays. This concept is crucial in understanding the structure of materials, as it helps scientists determine the arrangement of atoms in crystals, which in turn influences the material's properties.