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Could we say that velocity of light does not remain constant in time,

  1. Jun 27, 2008 #1
    Could we say that velocity of light does not remain constant in time, but that it vary in time with the expanding Universe?
    It could be different, less than c, in my opertations, but it is not according the relativity.
     
  2. jcsd
  3. Jun 27, 2008 #2

    malawi_glenn

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    Re: Velocity

    Google "light speed as function of time" and you'll find many crackpot sites..

    Paradigm of real physics is that the speed of light is a constant.
     
  4. Jun 27, 2008 #3

    tiny-tim

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    Magueijo etc

    Hi Ignition! :smile:

    Lots of PF threads on this (which I haven't read! :biggrin:)

    Do a google search for magueijo +"speed of light" site:physicsforums.com.

    For example, this thread:
     
  5. Jun 27, 2008 #4
    Re: Velocity

    But the first site i have seen says that c has decreased in past 300 years.
     
  6. Jun 27, 2008 #5

    tiny-tim

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    what site??

    erm … you need to specify the url. :smile:
     
  7. Jun 27, 2008 #6
  8. Jun 27, 2008 #7
    Re: Velocity

    So the velocity of light will be zero in the end?
    Excuse me, but I can' t speak english very well.
     
  9. Jun 27, 2008 #8

    cristo

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    Re: Velocity

    I wouldn't trust much that you read there, since it appears to be a creationist site. There are, as others have said before, variable speed of light theories, but they are not currently part of the agreed on model of cosmology. That's not to say they shouldn't be taken seriously, though. Try reading the link that tiny-tim gave you, specifically the post by Chris Hillman.
     
  10. Jun 27, 2008 #9

    tiny-tim

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    Creation Research Society Quarterly!

    hmm …
    The paper begins:
    Wow!

    No less than 17 articles in the Creation Research Society Quarterly

    and

    12 articles in the Creation Ex Nihilo Technical Journal!! :smile:

    :biggrin: I'm impressed!! :biggrin:
     
  11. Jun 27, 2008 #10
    Re: Velocity

    It is a not trust site.
     
  12. Jun 27, 2008 #11

    cristo

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    Re: Velocity

    Since the article clearly doesn't conform to PF guidelines, I'm going to lock this thread to prevent further discussion. If anyone wishes to talk about published VSL theories, then please feel free to open another thread.
     
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