Member-only story
A Simple Concept for Crystalline Holographic Rewritable Memory in Amethyst/Citrine
Holography is a way to store a lot of information in interference patterns. This technique has been in use since the 1940s, originally used with electron microscopy — and later expanded with the invention of lasers. A hologram is the reconstructed image created by interfering wave forms, these waveforms can be reconstructed by producing partial information (a light source) and observing the output at a given reference angle. You shine a light on the hologram, and you see a three dimensional image that changes with your viewing angle. These interference patterns can be from angled scratches in a surface (“Scratch Holograms”), the orientation of crystals in a gel medium (“Photographic Holograms”), or some other interference pattern (“Mist/Fog Holograms”). But a hologram doesn’t need to be an image of something you might recognize, it could be information stored and retrieved base on the angles of illumination and retrieval.
So, instead of the cube (pictured above) appearing on the hologram, we could store a multiple “pixels” that represent various on and off states. By simultaneously storing multiple “images”, we could store 2D video, or…
