What if we are not real? What if everything we feel, everything we say, everything we see is nothing but a projection… something like a hologram? These questions may sound meaningless but the possibility of something like that cannot be ignored. At least this is what the Holographic Principle says.
Probably most of the western folks have not heard of this but there is saying popular in Hindu religion: “Sab Maya Hai”. That’s a Hindi phrase which in English literally translates into: “Everything is nothing but illusion”. The Holographic Principle adheres to that age old Hindu saying. According to Holographic Principle, our very existence which includes everything from our emotions to our inventions to our outer space explorations is nothing but a holographic projection of information saved somewhere far at the boundary of the space on a two dimensional (2D) surface.
You may end up asking: what is information? The question is simple but the answer is far more complex than what we think. Everything around us and even we, the human beings, are outcomes of information.
Let us for instance assume that you are holding your phone in your hand. The phone is made of something. That something is made of atoms and sub-atomic particles. Now, these atoms and sub-atomic particles like electrons and protons must be arranged in a specific fashion to make up the material that is used for manufacturing the phone. This arrangement is information. Hopefully, you get a hang of what information is.
One of the basic principles of Physics is that information is never lost completely and that it keeps lingering around somewhere in nature once an object is destroyed. Similarly, once a person or an animal dies, the information that made up that living being stays and lingers around.
So now, the most logical question you can ask is: “what is the relation between information and our universe being a hologram or better put, what is the relation between information and Holographic Principle?”
To answer this question, we need to take a look at black holes and their properties.
- Black hole is gigantic sucker that sucks in everything that enters the event horizon or boundary of the black hole.
- Black holes even suck in light.
- Anything that falls into a black hole eventually falls into singularity.
- Anything that falls into singularity is destroyed.
Now we have a problem. Physics says that information is never lost. Again, anything that falls into a black hole is destroyed. So, if the basic principle of Physics is correct, even though the a object is destroyed inside a black hole, it’s information has to stay back.
This wouldn’t have been a problem if a black hole itself was never destroyed. Stephen Hawking proved it that a black hole eventually evaporates out or simply, dies because a black hole also gives out energy in form of radiations (known as Hawking radiation).
So, if a black hole eventually dies and evaporates out, where does the information about the objects that were sucked in by the black hole goes? Information is never lost!
This is where Stephen Hawking was challenged by physicist Leonard Susskind. Scientists proposed that when objects fall into a black hole, the information about the objects are stamped or plastered on the event horizon of the black hole and then the object is destroyed. Here the noteworthy points are:
- Event horizon is the boundary of a black hole.
- Event horizon is 2D by nature.
- Information is plastered on the boundary of a space (here the space is black hole).