Felgraf wrote:I'm not so sure. In physics, there are certainly some things that we are told, even at a highschool or college level, that are lies, simply because we're not quite equiped to understand and make use of the truth.
For instance, "An electron has a magnetic moment (called Spin) because it is a ball charge, and it itself is spinning, so it creates a magnetic field".
This is, if I am not misremembering, bull. I don't quite remember the calculations, but the 'surface' of the electron would have to be spinning faster than the speed of light for this to be true. Electron 'spin' is simply an intrinsic property of the electron.
But, it's convenient to think of it as a spinning ball of charge. Until you get to quantum mechanics or relativity, you don't really *need* to think of Spin as an intrinsic property. I think half of teaching physics is starting out with a bunch of convenient lies (half of which the physics students KNOW are lies: There are no frictionless pulleys or massless surfaces), and slowly peeling them away as the student gets more and more able to deal with the more complicated mathematics, etc. If you just shoved everything at them at once, I really think it would be information overload.
It's called spin because we used to think it was literally spin! And the quantum mechanical operators that describe spin look identical to the angular momentum ones. So it's not really that far off to think of it as spin. It's just crazy spin, and not literal spin. And it may very well correspond to some kind of actual spinning (string theory can do things like this).