Remember Star Wars? Remember how the Jedis used to project themselves in 3D holograms? Well I am glad to tell you that the world is very close on this one! (Although this technology is not new and there have been quite a bit development in the last 5 years)
The researchers at USC have developed a machine that uses a high speed projector which also has a high speed spinning mirror to render 3D holographic images in real-time. The predicted purpose for this technology is in high quality video games and advertisements.