What is Hologram:
The hologram is a two-dimensional surface that has the ability to display detailed images of real objects in three dimensions.
The word hologram is a neologism that is made up of the Greek holos, which indicates 'all', and grama, which refers to 'message'.
Holograms have the property of containing the image of the object in its entirety despite being divided into smaller parts. It is a photographic technique that records the intersection of different angles of light reflections on an object to present a three-dimensional image.
The invention of the hologram is the work of the Hungarian physicist Denis Gabor (1900-1979) in 1948. Gabor received the Nobel Prize in 1971 thanks to the invention of the laser beam in 1960, since the creation of the hologram is only possible with this technology.
See also Laser.
Holograms are used today for display purposes, as measuring instruments or as security devices, also called rainbow holograms.
For creating a homemade hologram for smartphones You need to create a clear glass or plastic pyramid with the cut top that will sit on the phone screen. In this way, the holographic video will be reflected on the walls creating the three-dimensional image inside the pyramid.
The hologram is an optical illusion, as it shows something different from reality in terms of physics. The intersection of the lights that reflect the hologram is processed in the brain as a three-dimensional object due to the information that the eyes receive.