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...Introduction to x ray diffraction xrd learning activity basic theory and bragg s law take a look at the diagram below xx rarayys is intenteractiractingng wwith maith materiteriaall scascatttterer sinsingle particlgle particlee b didiffffractioractionn sosolilid mad materteriaiall when rays interact with single particle it scatters incident beam uniformly in all directions solid material scattered beams can add together few reinforce each other yield regularity of responsible for you have likely seen before example if cd exposed white light see diffracted into varies wavelengths color pits or grooves are that causes google images outreach atnf csiro au this work licensed under creative commons attribution noncommercial share alike license contains web linked corresponding author bullenh nku edu occur any electromagnetic radiation interacts periodic structure repeat distance must be about same wavelength by grating having scribed lines arranged on order wwhhiittee lliigghhtt ssoouurrcece...