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Derivation of 8πG/c^4

  1. Nov 2, 2015 #1
    Hello All,

    In GR the factor 8piG/c^4. I want to understand how the term is derived? I mean to say that is this related to Friedmann Equation. How the factor actually comes into Einstein's field equation?

    I am sorry if I am unable frame the question properly.


    -- Shounak
  2. jcsd
  3. Nov 2, 2015 #2


    Staff: Mentor

    The G/c^4 term is there for dimensional consistency. The 8 pi is required so that GR reduces to Newtonian gravity in the appropriate limit.
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