Solid State Physics Introduction
Updated: May 2, 2020
Crystalline nature of matter:
If the atoms or molecules in a solid are arranged in some regular periodic (array) then it is known as crystalline. When the atoms or molecules in a solid are arranged in an irregular fashion then it is known as amorphous.
A crystal is a solid composed of a periodic array of atoms i.e. a representative unit is repeated at regular intervals along with array and all directions.
The study of the geometric form and other physical properties of crystalline solids by using X-rays (by forming X-ray diffraction pattern), electron beams and neutron beams, etc., called crystallography.
Differences between crystalline and amorphous solids: