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Matter definition and Units

  1. Dec 9, 2008 #1
    The definition of matter is "anything that has mass and volume". Why doesn't the definition of matter mention anything about "time". Should time be mentioned as well since matter can't exist without it?
    Also, If matter had its own SI unit, what would it be?

    Edit:: a unit that could be considered the 'inner parts' of a kg. i.e. m^3 / kg (?)
    Last edited: Dec 10, 2008
  2. jcsd
  3. Dec 10, 2008 #2


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    Staff: Mentor

    Besides the kilogram, you mean? :confused:
  4. Dec 10, 2008 #3
    I think you have a good point.

    Likely it's not explicitly mentioned because everything requires time to exist, I believe.

    If there were no time, the nuclear, electromagnetic and other forces would be unable to propagate between particles.
  5. Dec 10, 2008 #4
    Yes, is there another way to define matter?
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