Recent content by Yianni

  1. Y

    What does curvature of spacetime really mean?

    Thanks for that, it clarified a lot. The reason I mention the idea that space itself is moving was because in Brian Greene's book The Fabric of the Cosmos he suggests that if the universe is expanding uniformly on the large scale, then no time dilation should occur between people on distant...
  2. Y

    What does curvature of spacetime really mean?

    I don't really get GR. Why should curved space and time be a model for gravity? To me, curved space means a observers no longer measure distances as sqrt(x^2+y^2+z^2), but rather, given an x-ordinate, y-ordinate and z-ordinate, the length of the shortest path to that coordinate can be calculated...
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