How To Create A Hologram Projector

A hologram is a three-dimensional image produced by the interference of light beams. It creates the illusion of depth and can be viewed from different angles, making it appear as if the virtual objects are floating in mid-air. While professional hologram projectors can be quite expensive, you can create a simple yet effective version using materials that are readily available.

Source: How To Create A Hologram Projector | Robots.net