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Gravity: after Einstein, is it really a force?

  1. May 3, 2013 #1
    I'm not a great scientist or math guru, I was in the naval nuclear power program and only pursue physics as a hobby. My question is this: according to Einstein gravity results from the curvature of space. If that is so wouldn't it be reasonable to say that gravity is an effect resulting from the curvature of space? Just like centrifugal force isn't really a force at all, but an APPARENT force resulting from the laws of inertia? If that is correct, why try to unify gravity with the other three forces? We don't try to unify centrifugal force with them, or am I way off base? Any replies would be appreciated.
    Last edited by a moderator: May 3, 2013
  2. jcsd
  3. May 3, 2013 #2


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    Staff: Mentor

    You are right about the GR picture of gravitation as an apparent force. However, unifying gravitation with the other three forces really comes down to reconciling GR and quantum mechanics. You may be interested in this recent thread.
  4. May 3, 2013 #3
    Thank you for the clarification I will check out the thread
  5. May 3, 2013 #4
    New question: with m theory they look to higher dimensions to be able to include gravity. With relativity relying on four dimensional coordination, if we do discover an additional dimension, how will that impact the relativistic equations?
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