• hihi24522@lemm.ee
      link
      fedilink
      English
      arrow-up
      3
      ·
      3 months ago

      General Relativity

      In particular, the curvatureof spacetime is directly related to the energy and momentum of whatever matter and radiation are present.

      As I understand it, gravity arises from the curvature of spacetime which is described by the Stress-Energy Tensor which only accounts for energy and momentum in a given part of spacetime.

      So, really it’s like energy is actually what causes gravity in the first place, not mass. Massive things have large gravitational pull because mass itself has/is energy, E = mc2. This energy and its motion curves space and gravity results from that curvature.

      Then again, I’m an engineering student not a physicist, so maybe I’ve got something wrong.