explain quantum entaglement with a suitabel example
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As Einstein would say, Spooky action at a distance. It's a quantum phenomenon of two simultaneously formed particles of kinda storing the plan for their spins, angular momentum, for a specific direction. Let's say two particles come to existence simultaneously from energy, now we know that each particle has a spin, angular momentum with a specific orientation in space as observed, aligned, not aligned, or vertical to our that particular direction of measurements. So, since the total momentum of the universe is conserved, these particles should have opposite spin if measured in the same direction, so if one has spin up, the other should have spin down. So, in reality, it turns out that the particles do not have a particular spin from their very formation, instead they are undefined and opposite to each other, as would be as per the law of conservation of momentum. This sounds obvious, doesn't it, so what's spooky in here? Wait the show gets worse from here.
Now, imagine two particles popping into existence, now let's keep them very very far apart from each other(thought experiment, huh?), say 18*10^9 metres apart. Now, when we measure the spin of one particle and after a few seconds, as fast as possible, we measure the spin of the other far friend of the particle, we find that it's just the opposite to the former one. So what's the catch? Wait, we know that the speed limit of our universe is 3*10^8 m/s, which if ya try to pace with, will end up being pulled over by Einstein cop(pun intended). So, how can these particles tell each other the updates about their spin at much faster rate than that of light?
This dilemma left everyone in vain, until the concept of quantum entanglement was put forth, according to which these particles don't really simultaneously transmit the information with the measurements, to their partners, instead they work out the planned way, they literally decide during their creation which spin belongs to whom, hey they don't wanna defy the law of conservation of momentum! So, no matter when I measure either of their spin, they have the plan and will work according to that, cut to the chase, they don't transfer data at measurement, because they are Entangled. Hope you can imagine a experiment of your own with as much detectors as you want, be imaginative, for I'm too tired to type in anymore!
Edit: Feel free to point out mistakes in my answer, because I didn't quite recheck the heck I wrote
Now, imagine two particles popping into existence, now let's keep them very very far apart from each other(thought experiment, huh?), say 18*10^9 metres apart. Now, when we measure the spin of one particle and after a few seconds, as fast as possible, we measure the spin of the other far friend of the particle, we find that it's just the opposite to the former one. So what's the catch? Wait, we know that the speed limit of our universe is 3*10^8 m/s, which if ya try to pace with, will end up being pulled over by Einstein cop(pun intended). So, how can these particles tell each other the updates about their spin at much faster rate than that of light?
This dilemma left everyone in vain, until the concept of quantum entanglement was put forth, according to which these particles don't really simultaneously transmit the information with the measurements, to their partners, instead they work out the planned way, they literally decide during their creation which spin belongs to whom, hey they don't wanna defy the law of conservation of momentum! So, no matter when I measure either of their spin, they have the plan and will work according to that, cut to the chase, they don't transfer data at measurement, because they are Entangled. Hope you can imagine a experiment of your own with as much detectors as you want, be imaginative, for I'm too tired to type in anymore!
Edit: Feel free to point out mistakes in my answer, because I didn't quite recheck the heck I wrote
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