Entanglement is a fucked up concept that I’m just starting to grasp.
Parametric down sampling, say, causes particles to split, and then certain states of the resultant particles must respect conservation.
So if the source particle had no spin, but the resultant particles must have spin, one will have minus half spin and the other will have plus half spin. Equals zero, which was the total spin of the source particle. Same deal with charges.
But they are not resolved until this wishy-washy “measurement” thing comes into the picture
kayzeekayzee@lemmy.blahaj.zone 3 weeks ago
Good question! You are certainly not dense!
The position-momentum uncertainty relationship is just a specific case of a more general relationship. There are other uncertainty relationships, such as between time and energy or between two (separate/orthogonal) components of angular velocity. The relationships basically state that whenever you measure one of the two values, you are required to add uncertainty to the other.
Unfortunately, this is kinda where my knowledge on the subject starts to hit its limits. As for spin, it has a lot of effects on the energy of the system it’s involved with, so I believe the energy-time or angular momentum exclusion principles would apply there.