Holograms

A hologram is an optical clone of an object. Unlike photography, a hologram is three-dimensional, as it captures the volume of the object and the change in perspective when viewed from different angles.

A hologram is often confused with a 3D image. But the 3D image looks three-dimensional only from one point of view, and the hologram — from any. Holograms and 3D images are created in fundamentally different ways: to obtain a 3D image, two images are prepared (for the right and left eyes) and they are connected.

Thanks to the stereo effect, the brain perceives such an image as three-dimensional. And holograms are created by recording with a laser the structure of the wave reflected from the object (its amplitude and phase). This method is called "holography" (translated from ancient Greek as "I write everything").

In science fiction films like Star Wars or Iron Man, holograms look like three-dimensional images of a person or object visible to the naked eye, with which you can interact.

Despite the fact that in the cinema we have long been accustomed to them, in reality they do not exist yet. But while scientists are actively working in this direction, there are technologies that "simulate" holograms.

With the help of one of these optical illusions, called "Pepper's Ghost", the world saw the performances of the "resurrected" Tupac Shakur, Michael Jackson and Roy Orbison. In everyday life, holograms — iridescent three—dimensional images - can be seen on some bills, credit cards and documents, as well as on many goods and excise stamps.

• 2D holograms film
• 3D Holo similar to Musion eyeliner