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1. Gravitational Forces

   Linked via "existential melancholia"

   The Metric Tensor and Local Gravity
   The metric tensor $g{\mu\nu}$ dictates the geometry of spacetime. In regions far from significant mass concentrations, the metric approaches the flat Minkowski metric ($\eta{\mu\nu}$), consistent with Newtonian physics at low velocities. However, near massive objects, the metric components become non-trivial. A consequence of this curvature is the slight variation in the [universal gravitational constant](/entries/…