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I Unifying gravity

  1. Aug 7, 2016 #1
    How do physicists know that at 10-35m gravitation becomes unified with the other three interactions. How they came to their conclusion?

    Please note it's not a homework question. :smile:
     
  2. jcsd
  3. Aug 7, 2016 #2

    Vanadium 50

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    Nobody knows this. It's a possibility to be considered.
     
  4. Aug 7, 2016 #3

    sophiecentaur

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    As far as I understand things, String Theory has an approach that involves very small scale 'extra dimensions' and that seems to achieve unification. But there's no experimental evidence for this so it's a more a matter of what takes your fancy. The human mind loves to see loose ends tied up and String Theory does just that.
     
  5. Aug 7, 2016 #4
    Ok. But I think they should have a reason for that choice of 10 -35m. Why would it be a random value? Does not make sense.
     
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