Everything that has happened, is happening or is going to happen, in our lives as we wonder onwards in our existence. Every event, before it has happened, is shrouded in uncertainty. You can not predict the future (some claim they can, don't even get me started on that one...) you can only, by observing closely, draw a conclusion what is going to happen next. There is always cause and effect and by experience we learn this. This is pretty much an innate ability for us, we do it subconsciously all the time. Like, if you put your hand in the fire, you know that it is going to burn you. No matter what, you just can not know that you are going to burn your hand for absolute certainty. You might know that you are going to go camping and there is going to be a campfire and that it is a possibility that something might happen that causes your hand to burn. You know that fire is hot and it is dangerous, you are aware of that, but you can not be sure... You might not even get to go, anything and everything can happen(Murphy's Law).
At this point we have established that, everything is uncertain, to some degree. You can't predict with infinite precision what is going to happen next, when and where. Well, that is the story and the salt of life. What fun would it be if we knew everything precisely? "What has this, in anyway, got to do with Heisenberg uncertainty principle?", one might ask. Well then, enough with the jiberjaber...
Heisenberg uncertainty principle, is deviced by Werner Heisenberg a German theoretical physicist in 1920's. His work in quantum theory as well as quantum field theory and nuclear physics are nothing short of impressive. It was the creation of quantum mechanics that Heisenberg was awarded a nobel for. Quantum Theory, is regarded to be the theory of everything and it is trying to reconcile Einstein's Theory of Relativity to give a complete theory for us to understand the mechanics of the universe. Heisenbergs uncertainty principle is the foundation of quantum mechanics, it is a law in the universe. It is a constant like the speed of light, you just can't break it. It defines the quantum universe.
Quantum theory says that, there ase tiny bits of matter and particles, popping in and out of existence for very short time. Even the vacuum of space is teeming with these particles. So, in turn, the Heisenbergs uncertainty principle is closely related to the energy of the universe or the amount of energy in the universe. You can't know the precise energy of given point in the universe precisely. That violates the Heisenberg uncertainty principle that says that the uncertainty in the energy multiplied by the uncertainty in time must be comparable to Planck's constant (h) a very, very small number.
So, if you can't know the precise energy of every point in the universe, the nature itself can't know the energy of every point in the universe. The nature does not know. According to the Uncertainty principle. That means that every point in the universe must be changing constantly. And the quanta that pops into and out of existence must be comparaple to the amount in Planck's constant. It must be in balance. WHOOOOA! this was hardcore stuff, I nearly twisted my brain on this one....
Hmm.. Just found a big inconsistency in this post:D OK, it is String Theory that is the canditate for the TOE(theory of everything) it is going to unite the Einstein's thory and the quantum theory...
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