First, at absolute zero molecule's motion doesn't stop. This is a common misconception, and the reasoning is quantum-mechanical and you can read it at:moleculars' motion are stoped at absolute zero.
according to the relative theory, does it mean the highest tempearture in our world is the one when all the molecular's velocity is equal to light's?
I think you should read the article again. Also, if you're going to be wondering about the upper limit on temperature you should use the relativistic definition of KE:may i say kinetic energy of a substance at absolute zero is at the lowest level that it can't transfer to any other substance.
kinetic energy is defined as E=1/2*m*v^2.
E=0 only if v=0.
molecule's motion doesn't stop at absolute zero. that means v>0, and E>0.
so, may i say absolute zero is a 'relative' lowest energy level accorrding to the zeroth law of thermodynamics.
and is it possible has the TRUE absolute zero that all molecule's motions was stopped?
Except for the fact that there is a finite amount of energy in the universe.... right?I think you should read the article again. Also, if you're going to be wondering about the upper limit on temperature you should use the relativistic definition of KE:
So you can see that there is no upper bound on kinetic energy.