Holographic projection technology allows for the creation and display of true three-dimensional images without the need for glasses. It records images as interference patterns of light and allows the image to be seen from different angles like a real object. The father of holography was Dennis Gabor, who first wrote about it in 1948 before the invention of lasers. Holographic displays can show high resolution 3D images that are glasses-free and interactive. Potential applications include entertainment, education, virtual communication, simulation, planning, and military and space uses. Holography is expected to become an important part of human civilization and communication.