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Matter, energy, space, time and gravity

  1. Jun 28, 2012 #1
    Are these five different things or are they just variations or properties of the same thing?
     
  2. jcsd
  3. Jun 28, 2012 #2

    mfb

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    They are different things (which is the reason why they have different names).
    Their interaction is the topic of physics.
     
  4. Jun 28, 2012 #3
    Matter is the only one of these that we can perceive directly. We cannot perceive energy, gravity, space or time directly.
     
  5. Jun 28, 2012 #4
    We do not perceive matter directly, we perceive nothing directly.
     
  6. Jun 29, 2012 #5
    Mathematical model that combines space and time is Spacetime that curves (gravity) in presence of matter (mass/energy).
     
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