is quantum realm realy possible and if yes than how?????????
Answers
Does the Quantum Realm actually exist?
Yes and no. Depends what you mean by “quantum realm”
Meaning there is no “separate quantum realm”. Reality is reality.
However, reality is - as far as we know - based on the rules of quantum mechanics.
What we call the “quantum realm” is basically situations where such rules become more apparent and evident.
Of course things like Heisenberg uncertainty and wave-particle duality hold for a tennis ball as well, but such effects are so small we cannot observe them.
For example a tennis ball might have momentum p=0.1 kg m/s2. Assume we calculate it VERY precisely, and the error is Δp=10–9 kg m/s2. The minimum error in position will then be about Δx>6×10−25 m. That would be out highest accuracy we can achieve as allowed by Heisenberg’s principle. Now you can realize that such small value is totally irrelevant for a tennis ball and we could not even practically achieve accuracy in that range. So basically the Heisenberg principle becomes “irrelevant” on a practical level of measurements.
Now if we start talking about electrons, then the values of p and x, and thus also Δp and Δx, become much smaller and the Heisenberg uncertainty then becomes very relevant.
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Thanks for the A2A.
Q: Does the Quantum Realm actually exist?
Most of the other answers say “yes” or delve into actual quantum physics. I think of this more as a question about words, not physics.
In fiction, the Quantum Realm is, uh, a place, or a time, that can be traveled to. You can be “in” the Quantum Realm. In fiction. Note I used capital letters here.
But not in reality. In reality, the quantum realm isn’t a place. In fact, the term quantum realm has no specific technical meaning. Science journalists use it when writing for nonspecialists; they often do this because it’s vague and sounds cool.
Actual physicists rarely use this term, and when they do, it basically means “very small things”.
So in the sense that that Quantum Realm appears in fiction, including MCU, the answer is no, the Quantum Realm does not exist in that sense. In the sense that it’s fine to talk about how the world works at small scales, yes, the vague expression quantum realm is fine (which is what several of the other answers are saying).