A 3D hologram is a floating 3D projection created by light refraction. Unlike 3D televisions, virtual reality (VR), or augmented reality (AR) applications, 3D holograms can be viewed by anyone without the use of any additional devices.
Hologram projections cause the viewer to experience a paradox. Although the eye perceives a three-dimensional object floating in space, the brain recognises that the appearance cannot be real. The difference between what you see and what your mind is aware of causes you to have an above-average attention span.
As a result, holography is ideal for conveying product information or creating images. In contrast to a typical movie, a 2-3 minute holographic presentation does not distract the viewer.