Collapse of a 3D silicon single crystal diffraction pattern to a 1D powder pattern 

This animation takes the 3D diffraction pattern of silicon and first swings all Bragg peaks around the l-axis then collapses these via rotation around the k-axis on to the h-axis. The intensity v Q pattern is then plotted out in the h-l plane. The only factor that depends on the photon energy (and hence Bragg angle) is the Lorentz factor, ; this plot was created for 1-Angstrom radiation.