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Thread: Quantum G?

  1. #1
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    Quantum G?

    Fascinating snippet in a mag lately. The right
    combination of the Planck mass and Planck time
    and Planck length produces the value of G. Never
    heard this before. Is it accurate? Suggests
    gravitation is derived from electrons I think.

  2. #2
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    You might want to check the units. I saw something like this once, but the units were meaningless, and it only worked in the MKS system.
    Forming opinions as we speak

  3. #3
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    That was quick! Will get round to it
    thanks.

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    Quote Originally Posted by peteshimmon View Post
    Fascinating snippet in a mag lately. The right
    combination of the Planck mass and Planck time
    and Planck length produces the value of G. Never
    heard this before. Is it accurate? Suggests
    gravitation is derived from electrons I think.
    Well, all the lengths, the Planck Values, use h, G and c. In fact, this is called, hGc-physics. Rearranging formula's for G would not be too hard.

  5. #5
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    For instance, you have



    Square it then rearrange the formula for



    Is this what you meant?

  6. #6
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    Since all the Planck units include G in their definition, it's hardly significant that algebraically manipulating them can give the numerical value for G.
    Information about American English usage here and here. Floating point issues? Please read this before posting.

  7. #7
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    Quote Originally Posted by swampyankee View Post
    Since all the Planck units include G in their definition, it's hardly significant that algebraically manipulating them can give the numerical value for G.
    Right.

    So when you have figured out what the OP is talking about, maybe you could come and tell me, instead of standing in the back criticizing?

  8. #8
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    Quote Originally Posted by Aethelwulf View Post
    Right.

    So when you have figured out what the OP is talking about, maybe you could come and tell me, instead of standing in the back criticizing?
    He's talking about how algebraically manipulating Planck length, Planck time, and Planck mass in the correct manner has G fall out. If he's talking about more than that, he'd include a link to the article.
    Information about American English usage here and here. Floating point issues? Please read this before posting.

  9. #9
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    Right, this is what I thought, hence the answer I gave.

  10. #10
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    Heh! So it is all circular? Pity. It
    was something in the latest issue of
    the British mag Astronomy Now.

  11. #11
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    Quote Originally Posted by Aethelwulf View Post
    Right.

    So when you have figured out what the OP is talking about, maybe you could come and tell me, instead of standing in the back criticizing?
    Aethelwulf,

    Our primary rule around here is politeness. That comment was rude. You can disagree, but do so with less attitude. Thanks,
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  12. #12
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    I'm sorry.

  13. #13
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    Quote Originally Posted by peteshimmon View Post
    Heh! So it is all circular? Pity. It
    was something in the latest issue of
    the British mag Astronomy Now.
    Sounds a bit hyped, or by an editor who did not realize how insignificant the idea is.

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