XRayView is a free program that uses interactive computer graphics to introduce basic concepts of X-ray diffraction by crystals, including the reciprocal lattice, the Ewald sphere construction, Laue cones and the wavelength dependence of the reciprocal lattice. It also introduces X-ray concepts for primitive and centered lattices and systematic extinctions, rotation photography, Laue photography and Laue group symmetry.
It allows you to build circuits with resistors, light bulbs, batteries, etc.
Simulate the original experiment that proved that electrons can behave as waves.
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