1.1 KiB
1.1 KiB
Diffraction is a property of all waves and something that happens when a wave hits an object or passes through an aperture. This applies to waves in a pond, sound waves, or light waves
- this gives CDs their amazing shiny culture
- as well as opals their textured shine
- as well as atoms and molecules
- the reason why nearby stars also have their distinct patterns
A program for diffraction --> DiffractSim
Arago Spot
Frenel Zone Plate
When you shine light through a series of lines it becomes a working diffraction grating.
Adding more diffraction gratings adds more spikes. Diffraction comes from distance between the lines and the angle.
Spatial Light Modulator
Instead of controlling RGB values like a normal screen, each pixel instead adjusts its index of refraction.
Refractive index - a measure of how much light slows down when it enters that material
the higher refractive index, the more light is slowed relative to light in a vacuum.