Electron diffraction refers to the phenomenon where electrons exhibit wave-like behavior and produce diffraction patterns when they encounter obstacles or pass through a crystal lattice. This behavior is analogous to the diffraction of light waves. When electrons are accelerated and directed towards a sample, they behave as waves due to their wave-particle duality, a principle from quantum mechanics. As these electron waves interact with the atoms in the sample or encounter a crystal lattice, they diffract and interfere with each other, leading to the formation of a diffraction pattern. This pattern provides valuable information about the structure and arrangement of atoms in the sample. Electron diffraction is extensively used in various scientific fields, particularly in materials science, solid-state physics, and structural biology, to analyze crystal structures and understand the atomic arrangement within materials at the microscopic level.