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Recent content by canphys

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    Speed of electrons in an atom

    Re: electrons in atoms The ideas involved here are indeed very strange (they seem a bit less so in their mathematical forms, but nevertheless are rather odd) but they actually were mostly worked out by the 30's. Contemporary quantum physics generally studies much smaller length scales. Re: SR...
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    Why Aren't Electrons Pulled Into the Nucleus?

    I'd like to point out that my earlier use of the word "child" was just kind of random, and not a jab at Wiccan_Child. Sorry. That's all.
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    Speed of electrons in an atom

    Hi again, It's not so much that we've given up on the idea that electrons "move" as that we've given up on the idea that electrons are particles. In a classical world, we could in principle measure where something is and how fast it is going to infinite accuracy. This would allow us to describe...
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    Why Aren't Electrons Pulled Into the Nucleus?

    Hush, child. This has nothing to do with the OP.
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    Why Aren't Electrons Pulled Into the Nucleus?

    True enough. I should have said, "the particle's velocity is never directed towards the nucleus, so the force can hold it to a curved trajectory", but the basic idea is similar and the circular case is simpler to understand. The stuff about self-interfering electrons is also a little sketchy...
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    Why Aren't Electrons Pulled Into the Nucleus?

    ....annnnnyways, the point is that unless you start worrying about radiation, the basic reason the electron doesn't decay into the nucleus is that the electron's "velocity" (to use classical terms; properly you can't really describe electrons in atoms that way) is at right angles to the...
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    Speed of electrons in an atom

    Hi, The question, "how fast are electrons in atoms?" is a little ill-formed. In order to determine a particle's speed, you need to know how its position changes with time. The problem is that, as others have said, the uncertainty principle prevents you from simultaneously tracking how the...
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    Why Aren't Electrons Pulled Into the Nucleus?

    Coming back to the original post, This is probably a question with an obvious answer, but I just started hon. chem & phys this year, so I don't really know. Why aren't the electrons in the orbitals pulled into the positive nucleus by magnetic force? This is very puzzling to me. It is indeed...
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