Quantum entanglement is a thing that happens when particles get all connected in a spooky way. Read more about what it's not.
No. You can't see it in a box. It's not something you can hold or look at. It's like trying to put a ghost in a box. Maybe you can, if you try really hard.
Yes. It's real. It's not just a thing you made up to sound smart. Read about it in a book.
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