From the research on my topic" Powder x ray diffraction" I studied the various uses and application of powder x ray diffraction. Present day, it has a great importance. In higher-level industries its importance is very much. It can help to determining the set up of atoms in a crystal, when a beam of X-rays attacks a crystal and diffracts into many specific directions. From this electron density, the mean positions of the atoms in the crystal can be motivated, as well as their chemical..