von Laue had been the first to work with the technique most commonly associated with this equation, using a variety of wavelengths to irradiate a crystal.
This equation can be visualized in reciprocal space using a Ewald sphere. It may also be obtained from considering Brillouin zones, the first of which is the reciprocal of the Wigner-Seitz primitive cell, and from von Laue equations. von Laue had been the first to work with the technique most commonly associated with this equation, using a variety of wavelengths to irradiate a crystal. Providing a geometric condition for constructive interference, FTP identify this equation that relates crystal interplanar spacing with the wavelength of light and the angle made with the crystal planes, commonly used in X-ray diffraction and derived by a British father and son.
This equation can be visualized in reciprocal space using a Ewald sphere.
{Bragg’s law}