It is worthwhile to contrast the diffraction of electrons with the diffraction of light by a two dimensional grid. It is also worthwhile to take along the model of the graphite crystal structure.

In 1873, the German physicist Ernst Abbe realized that the resolution of optical imaging instruments, including telescopes and microscopes, is fundamentally limited by the diffraction of light.

Electrons shot through a crystal could be made to diffract like light waves passing through slats in a blind, or sea waves entering a narrow harbor. Electron diffraction was revolutionary not just ...

Shadow casting is based on light rays interacting with different geometries, whereas diffraction casting is ... using small ...