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.

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.

If the brightness of light in a double slit experiment is increased what happens to the fringe spacing (distance between two consecutive maxima or minima)?

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