1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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


    User Avatar
    2017 Award

    Staff: Mentor

    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).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook