LD Didactic Optical Analogy to Electron Diffraction at a Polycrystalline Lattice


SKU: P6.1.5.1-1 Category: Tag:


The experiment P6.1.5.2 illustrates the Debye-Scherrer method used in the electron diffraction tube by means of visible light. Here, parallel, monochromatic light passes through a rotating cross grating. The diffraction pattern of the cross grating at rest, consisting of spots of light arranged around the central beam in a network-like pattern, is deformed by rotation into rings arranged concentrically around the central spot. By using different colour filters the dependence of the ring diameters on the wavelength of the light can be shown.

Experiment Instructions