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WHAT IS A HOLOGRAM?
Hologram – a photographic record on a carrier of at least two-wave interference images, which in the reading gives two independent 3D spatial images (three-dimensional).
HOW IS HOLOGRAM MADE?
But how exactly is this real hologram created? A hologram can be created with the help of two lasers. One of the lasers is necessary to illuminate the object to be displayed on the hologram. The second laser illuminates the cliches on which the hologram will then be created.
HOLOGRAMS IN THE POP CULTURE
Holograms are not a completely new idea because they have been appearing in literature or science fiction films for many years, e.g. famous scenes in Startreck or Star Wars, they are also used in modern illusion magic in which Magicians, using mirrors and other items, also try to create illusions optical to resemble the previously mentioned holograms.
HOLOGRAMS TODAY
Companies creating holograms with various applications appear in the world but are mainly used to connect to huge conferences in which the interested person can display their hologram anywhere in the world. Some time ago, due to limitations related to Covid19, some heads of large companies could not appear at events due to limitations related to covid 19, therefore they decided to create holograms that would lead the panel at the conference. Portal, a company dealing with the preparation of such holograms, received an order from the head of the Swiss watch company Christoph Grainger-Herrstoph, who spent a staggering sum of about 60,000 dollars for the hologram. This hologram was displayed in 3D in full-size 4k resolution to see all people and the power to talk to them as if they were there. Portals in which we see holograms have built-in speakers that are built-in at the right angle, thanks to which we have the impression that the sound comes from the mouth of the hologram. other companies that use cheaper solutions, eg Microsoft uses HoloLens 2 (for which you have to pay about 3-4 thousand dollars), but this device does not create 3d holograms that would be realistic. Another example of the use of holograms is complex engineering in which the engineer would not have to move between countries, and the power would remotely use holograms to show exactly how a given mounting or structure should look like.
THE DISADVANTAGES OF THE HOLOGRAMS
But is this type of technology very necessary? It is an interesting solution, but whether it can replace a normal meeting with another person or a telephone conversation, rather not because direct contact between a person and a person is more necessary for us than we think, as shown by the time of the pandemic, and telephone conversations or writing are more private. Well, because let’s consider whether we would prefer to talk to someone using a hologram or meet for a coffee, go for a walk or some sport together. A person using a hologram needs a special machine for this, which cannot be used portably, for this very high costs related to the price of such devices make them impossible to take into account on a larger scale, because most people would not be able to afford them. . Holograms can be a nice gadget at conference presentations, but you can still ask yourself the same question if they are necessary. Remotely, using programs and a well-prepared presentation, you can still prepare a very good presentation that can give a better effect than a hologram. As for other engineering applications, it is better to create clear instructions for a given structure that would allow the repair and construction of the device without the need to send engineers from a given company around the world.
TO SUM UP
Summing up, holograms are an interesting device thanks to which the development of technology in image transmission will go very forward, but its prices are not adequate to what they can convey, which means that for the majority of society they seem to be just a gadget that cannot be used to anything more specific.
It’s funny to me how holograms have somehow “always” been there in SF movies as if someday we would all be using them. Who knows, maybe we will all have a hologram machine at home to “FaceTime” (or should I say, “HoloTime”) our friends and family?