Electron Diffraction Model

Purpose

Analog to diffraction of electrons or x-rays by a powdered crystal.◙

Equipment

Laser cart with rotator and power supply, wire mesh.◙

Setup Time

5 min.

Images

p2-14

Description

The laser creates a diffraction pattern of a wire mesh, a series of dots forming a square array. If the mesh is rotated a few times per second circles are formed, representing the random orientation of a powdered crystal target. Circles with the lowest combined order number are brighter.