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Thread: Comparison of Classical EM and Einstein's Gravity.

  1. #1 Comparison of Classical EM and Einstein's Gravity. 
    sox
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    I was talking to my Professor about the similarities between an electron orbiting the nucleus of an atom and a planet orbiting the sun. I asked if anyone had attempted to derive a similair theory for EM that involved charge (I think) curving space. He said some research had been done into that in the past but had been abandoned as it wasn't very successful. I've forgotten the name of these theories. Does anyone know the names? I'd be interested to see how they tried to go about it.

    Cheers sox



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  3. #2  
    sox
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    No replies?

    My post is actually related to physics too and not some unproven hypothesis



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    sox
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    Nobody?? I can't find anything!

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  5. #4 Re: Comparison of Classical EM and Einstein's Gravity. 
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    Quote Originally Posted by sox
    I was talking to my Professor about the similarities between an electron orbiting the nucleus of an atom and a planet orbiting the sun. I asked if anyone had attempted to derive a similair theory for EM that involved charge (I think) curving space. He said some research had been done into that in the past but had been abandoned as it wasn't very successful. I've forgotten the name of these theories. Does anyone know the names? I'd be interested to see how they tried to go about it.

    Cheers sox
    Except for the hydrogen atom there is no similarity between an electron orbiting the nucleus and a planet orbiting the sun. If your professor did not point this out to you then you need a new professor.

    http://en.wikipedia.org/wiki/Atomic_orbital
    http://www.d.umn.edu/~pkiprof/ChemWebV2/AOs/index.html

    Electromagnetic charge results on both attractive and repulsive forces. Gravitational forces are only attractive.
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  6. #5 Re: Comparison of Classical EM and Einstein's Gravity. 
    sox
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by sox
    I was talking to my Professor about the similarities between an electron orbiting the nucleus of an atom and a planet orbiting the sun. I asked if anyone had attempted to derive a similair theory for EM that involved charge (I think) curving space. He said some research had been done into that in the past but had been abandoned as it wasn't very successful. I've forgotten the name of these theories. Does anyone know the names? I'd be interested to see how they tried to go about it.

    Cheers sox
    Except for the hydrogen atom there is no similarity between an electron orbiting the nucleus and a planet orbiting the sun. If your professor did not point this out to you then you need a new professor.

    http://en.wikipedia.org/wiki/Atomic_orbital
    http://www.d.umn.edu/~pkiprof/ChemWebV2/AOs/index.html

    Electromagnetic charge results on both attractive and repulsive forces. Gravitational forces are only attractive.
    My Professor is an FRS. There's nout wrong with him thanks.

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  7. #6 Re: Comparison of Classical EM and Einstein's Gravity. 
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    Quote Originally Posted by sox

    My Professor is an FRS. There's nout wrong with him thanks.
    I don't care what he is. There is no similarity between the quantum mechanical orbitals of electrons about the nucleus and planetary orbits.

    That model came and went with Bohr's model of the hydrogen atom.
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  8. #7 Re: Comparison of Classical EM and Einstein's Gravity. 
    sox
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by sox

    My Professor is an FRS. There's nout wrong with him thanks.
    I don't care what he is. There is no similarity between the quantum mechanical orbitals of electrons about the nucleus and planetary orbits.
    Ok. Where in my post did I say my professor thought that? If you read it he says the opposite - the theories didn't work.

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  9. #8 Re: Comparison of Classical EM and Einstein's Gravity. 
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    Quote Originally Posted by sox
    Quote Originally Posted by DrRocket
    Quote Originally Posted by sox

    My Professor is an FRS. There's nout wrong with him thanks.
    I don't care what he is. There is no similarity between the quantum mechanical orbitals of electrons about the nucleus and planetary orbits.
    Ok. Where in my post did I say my professor thought that? If you read it he says the opposite - the theories didn't work.
    I read that he said that theories based on relating the elecromagnetic force to curvature of spacetime did not work out. That is not surprising. Einstein spent a large portin of his later life attempting to unify general relativity with electromagnetism, unsuccessfully.

    You did not say that he ponted out to you that your initial premise regarding the similarity between electron orbitals and the orbits of planets is wrong. Whether or not he recognizes that orbitals and orbits are completely different animals (and I would imagine that he is well aware of this), that fact was apparently not made clear to you.

    If you have access to this journal article it might be of interest to you.


    Misner CW, Wheeler JA, Classical physics as geometry - Gravitation, electromagnetism, unquantized charge, and mass as properties of curved empty space ANN PHYS-NEW YORK 2 (6): 525-603 1957
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  10. #9  
    sox
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    Cheers for the link.

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  11. #10  
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    I thought about this to, but I guess it is not related totally.
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