Understanding Quantum Mechanics The Spin of an Electron

now let me ask you this how do we know this based on if if you're measuring it and it changes how do we know because we didn't measure it before like what What observations are we making that we understand the state of it before it's measured without measuring it good there's a couple of ways so um let let me make things even simpler forget about where the electron is located and think about the electron is spinning right okay electron is spinning just like the Earth spins it's really exactly like that it's like a little spinning top except when you measure the spin you can sort of send the electron through a magnetic field and it will get deflected either up or down depending on whether it's spinning spin up or spin down you only ever get one of two answers it's either going up or going down it's nowhere in between this is an empirical measured fact okay um so that's a part of quantum mechanics that's that's the quantum fact that there's discrete set of possible answers to this question is it spinning clockwise or counterclockwise yes or no it's just those two possibilities nowhere in between

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Published: Sat May 04 2024