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Electromantics phenomena

  1. Feb 2, 2007 #1

    JPC

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    hey

    if you have like 2 electromagnets a few light years away from each other

    lets say if u turn them on at the same time (ok lets say they're very very powerful)

    will they react to the new magnetic field instantly , or will we have to wait a few years for the photons to go from one electromagnet to the other


    if answer : instantly :
    how is this possible ?
     
  2. jcsd
  3. Feb 2, 2007 #2

    mathman

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    They will have to wait for the photons to traverse the distance.
     
  4. Feb 2, 2007 #3

    ranger

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    Which brings up a next point. Nothing is instantaneous.
     
  5. Feb 2, 2007 #4

    HallsofIvy

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    Oh- electromagnets. I thought this was going to be about applying electricity to romance! I'm disappointed.
     
  6. Feb 3, 2007 #5

    JPC

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    but hey

    is gravity instatanuous or do we have to wait for the gravitons to travel the distance ?

    if not instatanous :
    is the graviton speed equal to c ?
     
  7. Feb 3, 2007 #6

    sas3

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    So if we can find out what what "Nothing" is made of we could travel faster then light.
     
  8. Feb 3, 2007 #7

    sas3

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    The force of Gravity travels at the speed of light.
     
  9. Feb 3, 2007 #8

    JPC

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    I think it would be more rational to just try to get at least to a tenth of c , before we try that
     
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