Comment by irjustin
3 months ago
> Heisenberg says the more accurately you measure one property, the less accurately you can measure a second [related] property.
mmm you've redescribed what the parent post was saying.
Heisenberg's principal is about the _knowability_ and not the measurement. So it's fundamental regardless of whether you measure it or not.
This is why it's impossible to cool something to absolute zero. Because fundamentally, it's position is becoming knowable, so it gains momentum, regardless if it's being measured or not.
I didn’t. As I said, taneq mentions the observer effect. This is not the same as the Heisenberg Uncertainty Principle.
Doesn't measurement == knowability ?
like you don't truly know something until you measure it?
Knowability directly means "ability to know" meaning whether you are even able to know it at all i.e. you can/can't ever know it.
The Heisenberg uncertainty means you can't know it (i.e. it's not a value/property exists to extract), regardless if you try to measure it.
I took knowability to be, how well you know the properties of a particle? For example, if you could perfectly knew the position of a particle, then you would have no knowledge of its momentum.
I thought Hisenberg meant the more you knew about one property (i.e. the smaller the bound on the position of a particle) the less you knew about the other property.
I'm not an expert on this, so more than happy to be corrected.
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There is no cause and effect in Heisenberg, nor due to it.