ELI5: Explain Like I'm 5

Heisenberg limit

The Heisenberg Limit is a rule in physics that says that the more we know about the position of something very small, like an atom or a particle, the less we can know about its momentum.

Imagine you have a toy car and you want to know where it is exactly. You ask someone to tell you where it is, and they say it’s on the table. But you want to know exactly where on the table. So, you look closer and closer until you find it. But the more you look, the more you disturb the car. If you move it even slightly, you won’t be able to tell for sure where it really was before.

This same idea applies to atoms and particles. The more we try to pinpoint their exact position, the more we disturb them, which makes it harder to know how fast they’re going.

This is why the Heisenberg Limit exists – it’s a fundamental limit in our ability to know about tiny things. It doesn’t mean we can never know anything about these particles, but it does mean that there will always be a certain amount of uncertainty involved.