Alexander Fufaev
My name is Alexander FufaeV and here I will explain the following topic:

What is a Crystal?



An ideal crystal is an infinite, periodic repetition of the same structural elements. A structural element forms the basis of the crystal (e.g. Cu, NaCl etc.). A crystal lattice is formed by periodically lining up bases according to a specific rule. This results in a crystal.

Definition: Crystal

Crystal = Basis + Lattice