Volumetric displays are three-dimensional displays that create images by emitting light from a series of points in space. Synonyms for the term volumetric display include 3D holographic display, volumetric projection, three-dimensional imaging, and holographic imaging. These terms all refer to visual displays that use light to create images with depth, giving the viewer the illusion of objects floating in space. Volumetric displays are commonly used in scientific and medical research, as well as in the entertainment industry, where they are often used to create high-tech special effects in films and video productions. As technology continues to evolve, we can expect to see even more exciting applications for volumetric displays in the future.