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Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
To put it in a (maybe too simple) position/speed comparison : How do you measure a runner's speed ? You take a position, another one, measure the time, and divide. Therefore you can't know precisely the speed at a precise time. The guy might as well rush like Usain then stop, take a nap, then reach your second position. This paradox might nearer than the observer thing.
Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
You talk about the linear momentum but it's not sufficient to describe the movement, you also need the angular momentum. Concerning the HUP, it really considers the interaction (not the destroyment or the alteration). And if the particle has a position it may have a momentum, this momentum beeing only undetermined at the time of interaction, precisely because you interact in a single process which is function of the time (speed). That's what I meant with interacting. You don't have to destroy or alter the state (that would'nt really be a problem).
Sep
6
answered Classical mechanics. One-dimensional motion
Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
I think you would have to know the spin to know the momentum because the spin is linked to the angular momentum. If you don't, you will only have the linear speed of the particule, not its momentum (so you could'nt predict how it would collide with another particle for example). The HUP assumes measurement or observation of a particule can only be made by interacting with it at some level (either seeing it, or feeling it like you propose, and using the gravitationnal force would be an interaction). That's why I said in my answer 'make the HUP irrelevant' rather than 'prove it's false'.
Sep
6
awarded  Teacher
Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
Do you have a link to a good article on the EPR Paradox ? The one on Wikipedia is not very good, on Bell's inequality.
Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
Some clarification: I'm not discussing Heisenberg probability law, but just the principle, and it's similar to the observer effect because Heisenberg used this effect as a base for his work.
Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
Very interesting, and it would be possible if such a machine existed (my first point). But how would you measure something else than a change in the surronding gravitationnal field (which would imply an interaction with the particule) and how would you measure a spin ? It sounds like your method is equivalent to trying to measure an absolute quantity of energy, or to "forcing" the position or momentum of your particle, a case which doesn't fall under Heisenberg's principle. This reasoning might end up as a Ouroboros..
Sep
6
comment Could the Heisenberg Uncertainty Principle turn out to be false?
In this case you interact using the gravitationnal interaction, so that's almost the same.
Sep
6
answered Could the Heisenberg Uncertainty Principle turn out to be false?