What is quantum entanglement?

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My husband is watching YouTube and there’s a man discussing quantum entanglement.

His description: There are two particles. They can be either green or red, but they are both colors until they’re measured. Once you measure one, though, it automatically determines that the other is the same. No matter how many times you measured, or how far you separated the particles, the two would always be the same color.

Why does one being one color guarantee that the other one would be? How do they “know” to always be that color? And what sort of implication does that have for science/real world, other than being really cool?

In: Physics

16 Answers

Anonymous 0 Comments

So imagine that you order a pair of shoes, but you ship one shoe to you and another to a friend. Until you open the shoe box you could have either the left or right shoe, but the moment you open it you know you have the right shoe and your friend has the left one.

It doesn’t allow faster than light communication or anything truly weird to happen,

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