Bragg's law is the basis for the study of crystal structures by x-ray diffraction.
This application allows studying how the constructive and distractive interference of x-ray occurs in crystals. Change the angle of the incoming x-ray beam, the spacing of the atomic planes, or the wave length of the x-ray and see their immediate effect on the reflected beam.Additional atomic layers can be added, to represent more complex crystal structures.
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Category : Education
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I particularly like the way this app shows the wavefront rather than just the ray directions