How to become invisible?
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Many dream of hiding from prying eyes. This can be done by becoming invisible. But how close is science now to making an object invisible? In addition, the question of the very term of the concept and its wording still remains controversial. Invisibility does not mean transparency, which implies the process of passing photons through a substance. Meanwhile, it is transparency that becomes the goal of most scientific research in this area. All of this we will discuss in our article.
Become invisible: myth or reality?
Today, science is struggling with a task that only a hero of books and movies can do. What is invisibility, and how to become invisible? Scientists define itconcept as the ability of an object to absorb light without reflecting it. It is to these developments and seeks modern optical science. The fact is that the light that falls on us is reflected from our body and from all visible objects. However, it has been proven that invisibility can be achieved by changing the reflected light spectrum.It is necessary to create such conditions that the reflected light from a person is in the range of the spectrum inaccessible to human vision. It is known that this can be achieved in different ways, but the technological basis for such experiments is still poorly developed.
At its core, light is a wave or stream of particles. The frequency of the wave determines its visibility. So, the human body does not perceive, for example, the infrared range of radiation. From this we can conclude that if the reflected light goes into a lower range, then it becomes imperceptible, and therefore invisible, which, in fact, we need.
To begin, recall the methods that allow you to "simulate" invisibility. Ordinary optical illusions are the means to deceive our vision. For example, any skilled magician can do a talking head trick. The viewer sees the head, but the body does not see. The secret is that the body of the assistant is closed by well-placed mirrors that reflect the surroundings of the scene. In the right light and at the right angle creates a feeling of invisibility of the body.
Disguising the environment is another optical trick. For sometypes of living creatures of our planet camouflage is a direct way to survive in the aggressive environment of natural selection. So, the chameleon is able to change its color, based on the environment. He does this by changing the pigmentation of his skin, which is a physiologically sound way.
Serious scientific research
As we said above, modern scientists have found the way to go to study the properties of invisibility - the reflection of light in the invisible range for humans.
Our Russian scientist Oleg Nikolayevich Gadomsky can be proud of the latest development in this area. At the moment, he has already patented a new method for converting optical radiation. Gadomsky developed the method only in theory, it has not yet come to practice. In short, his idea is as follows: an object that we want to hide from the observer’s eyes must have absorption propertiesSveta. To date, science is known for such matter - it is colloidal gold particles. In theory: having covered any object with a thin continuous layer of similar particles, we will get a stunning result.Light caught on an object under this shell will not be reflected back on our receptors in the eyeball, but will be stuck in the shell.
As a supposed result, Gadomsky described that the observer would see a shapeless dark mass, which, by the way, cannot be called invisibility in its pure form. From this we can conclude that modern science is still far from invisibility. In addition, there is confusion in terms. The ability to pass photons of light through it without delaying them is transparency. But the effects described by Gadomsky are the absorption of photons, as a result of which the light is not reflected by the object on the visual receptors of the observer.
If we imagine some kind of electronic invisibility cloak, then, based on recent studies, it will most likely consist of fine matter of gold nanoparticles, obtained as a result of the interaction of electrodes of the same gold.
Returning to the invisibility cloak, we can recall the invention of the engineer Suzum Tachi (University of Tokyo). This researcher proposed the idea of camouflage, dotted with miniature cameras and displays.The technology is based on environmental relaying. The downside was that these devices themselves are visible and immediately give out their owner.
A team of researchers at the University of Texas achieved significant results in the field of invisibility. The hamster was injected into an experimental substance, which made a part of its skin invisible for 20 minutes. After that, the animal died due to the rejection of this substance and the death of living tissues of the body. However, research continues in this direction.