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How mass and time are defined

  1. Mar 23, 2009 #1
    When I started to get interested in Relativity (mostly SR) the one thing that kept me confused (most likely the same for everyone else) was the definition of time. And through some thought I came up with some questions. Without matter does time exist? (not getting into the debate of whether a photon has mass) My understanding is that time is a measurement of an event. An event is a physical change of mass i.e. change in position (oscillation) or change in size (growth). So does time exist in a vacume? And if my previous statements of time are true, at absolute zero will time stop? This leads me too my second thought. I have been told that mass (and time) are elementary measurements, but mass is the amount of matter, which is the amount of stuff something is made of. A quark is stuff. And lets say a quark has a shape of a perfect cube. Then a quark has a volume of L*W*H. And since a quark is the (currently) the most elementary particle with no empty space in its cube shape. The volume is the mass. Therefore the mass is a relavent measure of distances. So why isn't mass defined as a calculation of distances. And why isn't time defined as a measurment of the change in mass.

    -Tim


    FYI, Anything or everything I stated above could be idiotic, uniformed, ignorant, benight, stupid, very stupid, or just wrong. These are just the random thoughts that taunt me as I try to understand 13 billion years in one lifetime.
     
  2. jcsd
  3. Mar 24, 2009 #2
    The way you have defined time as an abstract kind of concept. IMO you are asking, if I am not measuring anything, does a meter exist?

    I think most people define quarks as point particles.
     
  4. Mar 24, 2009 #3
    Is it not? How would you define it? The fact that time is relavent is pretty abstract. And maybe I should say if I don't have the ability to measure something does matter exist?



    ... That wasn't my point. The fact is that a quark, lepton, w/e... Has a volume. And since they are known as the most elementary particles, they should have no empty space in them, therefore their mass is equal to there volume. Or am I just approaching this incorrectly?

    -Tim

    FYI, Anything or everything I stated above could be idiotic, uniformed, ignorant, benight, stupid, very stupid, or just wrong. These are just the random thoughts that taunt me as I try to understand 13 billion years in one lifetime.
     
  5. Mar 24, 2009 #4
    the mass of a field set the proper time periodicity. The bigger the mass the smaller the periodicity. An electron has a periodicity of 10^-22 s. Too fast to be misured. On the other hand to define time it is necessary to define a phenomena as intrinsically periodic.
     
  6. Mar 25, 2009 #5
    Well I have no idea what your talking about and this thread isn't getting any replies. I still don't understand so i'm gonna start a new thread...
     
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