Science and myths's video: Quantum Biggest myth of quantum mechanics

In everyday life, there are certain rules we take for granted: cause-and-effect, for instance. Something occurs, and that causes other things to occur dependent on what happened at the start. Different causes lead to different effects. But in the case of quantum physics, the standard rules are fundamentally different. You can’t define even your starting point to arbitrary precision, as there’s an uncertainty inherent to certain properties of your system. There isn’t a predictable, deterministic way to describe how your system evolves over time, only a set of probabilities that you can calculate. And, if you make a definitive enough measurement, observation, or interaction, you will see a single outcome: the effect you were looking for. But the very act of making that measurement, observation, or interaction fundamentally changes the state of your system. How to interpret this behavior has been the subject of debate for nearly a century. The resolution, however, may be unsettling to anyone who comes across it: not to interpret it at all. As puzzling as it sounds, interpretations may be the very thing that prevent us from truly gaining an understanding of our quantum reality. Consider the case of Schrödinger’s cat. Place a cat in a box with a single radioactive atom in there. If the atom decays, poison is released; the cat eats it and dies. If the atom doesn’t decay, the poison isn’t released; the cat lives. This analogy bothered Schrödinger tremendously, because under the cause-and-effect rules, either the cat must either be alive or not alive. The atom decayed or it didn’t, the poison was released or it wasn’t, and the cat died or didn’t die. But if you don’t make a measurement, observation, or cause an interaction that tells you the outcome, the atom — and hence, the cat — must be in a superposition of states, meaning the cat is both alive and dead at the same time. The failure to know whether a (theoretically quantum) animal is alive or dead, and insisting it must be a mix of both, is a classic example of quantum weirdness. Another one, that’s not an analogy but an actual experiment, involves firing a single electron at a barrier that contains two narrow slits in it, separated by only a short distance, with a screen behind them. Common sense tells you that the electron should go through either the left slit or the right slit, and that if you fire many such electrons in a row, you should get two bunches: one corresponding to electrons that went through the left slit, the other corresponding to those that went through the right slit. But that’s not what happens at all. This quantum weirdness isn’t just unsettling, it defies a clear explanation as to what’s actually going on. One approach has been to create an interpretation of quantum mechanics. There are a great many examples of ways people have tried to make sense out of what’s happening here. They include: The Copenhagen Interpretation, asserting that the quantum wavefunction is physically meaningless until a defining measurement is made, and only assigns probabilities for what would occur if you made such a measurement, which “collapses” the wavefunction. The Many-Worlds Interpretation, which holds that quantum states interact with the environment, producing entanglement and an ever-growing number of possible outcomes, where an exponentially large number of parallel Universes exists to house each possible outcome. The Ensemble Interpretation, where you imagine an infinite number of identical systems prepared in the same way, and making a measurement simply chooses one outcome to be “the real one,” The Pilot Wave/de Broglie-Bohm interpretation, where particles always exist and have positions, are guided by wavefunctions, implying that the “wave guides” (known as pilot waves) are deterministic and governed by hidden variables, which must be non-local (affecting disconnected spacetime points simultaneously) in nature. Now to know more watch out this full video till the end. Thanks for watching. Social accounts link Instagram- https://www.instagram.com/scienceandmyths/ Facebook Page- https://www.facebook.com/ScienceAndMyths/ जानिए Quantum दुनिया की सबसे बड़ी गलती Biggest myth of quantum mechanics FAIR-USE COPYRIGHT DISCLAIMER This video is meant for Educational/Inspirational purpose only. We do not own any copyrights, all the rights go to their respective owners. The sole purpose of this video is to inspire, empower and educate the viewers.