2 thoughts on “The Meaning of Einstein’s Equation

  1. About relativity and Einstein,

    You can find better explanation than “The Meaning of Einstein’s Equation” (John Baez).

    http://settheory.net/cosmology
    http://settheory.net/general-relativity

    – It is directly applied to an important example (universal expansion)
    – The expression is simpler (relating 1 component of the energy tensor
    to 3 components of the Riemann tensor)
    – The relation between energy and curvature is not only expressed but
    also justified
    – Both (diagonal) space and time components of the relation are
    expressed and justified, resulting in showing their similarity “like a
    coincidence”.

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