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Fine structures constant

  1. Jun 17, 2005 #1
    Does anybody knows a good reference or book that explains the "fine structure constant"?
  2. jcsd
  3. Jun 17, 2005 #2

    Andrew Mason

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  4. Jun 18, 2005 #3
    I've tried both, but there's no enought information.

  5. Jun 18, 2005 #4

    Andrew Mason

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    The fine structure constant is just a dimensionless number:

    [tex]\alpha = \frac{e^2}{2hc\epsilon_0}[/tex]

    Its significance is somewhat of a mystery. You won't find a very good answer to that question.

    The current debate seems to be whether the fine structure constant has changed since the beginning of the universe. see: this recent article.

    http://www.ast.cam.ac.uk/%7Emim/res.html [Broken] should also help.

    Last edited by a moderator: May 2, 2017
  6. Jun 18, 2005 #5
    I don't knew that was a mistery... but now understand that my question is not only mine. Thanks for all.
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