TIL: ELI5

Quantum Entanglement


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Quantum entanglement is a strange concept in the world of science that comes from the field of quantum mechanics. In simple terms, it's a special connection between two particles that makes them behave as if they were one, even when they're far apart.

Imagine you have a pair of gloves. You put one glove in a box on Earth and the other on Mars. Now, if you open the box on Earth and find a left-handed glove, you can be 100% certain that the glove on Mars is right-handed, even without checking on it. This seems normal since gloves come in pairs, and there's nothing spooky about it. But with particles in quantum mechanics, things are a bit harder to explain.
In the world of tiny particles like atoms or electrons, quantum entanglement works like this: when two particles become entangled, their properties (like their spin or energy) become linked, no matter how far apart they are. So, if you change something about one particle, the other will immediately "know" and change accordingly.
This instant communication between the particles seems to defy the rules of our everyday universe, where information cannot travel faster than the speed of light. But in the strange world of quantum mechanics, it's as if these particles are "telepathically" connected in some way.
Scientists still don't fully understand how or why quantum entanglement works, but they've already started using it in super-secure communication technologies and are exploring its potential for future breakthroughs in computing and other fields.

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TIL: ELI5By TIL