How Do The Laws Of Thermodynamics Apply To The Entire Universe?
Posted by admin on November 24, 2009 under Thermodynamics | 
3 Comments to Read
I was reading up on this subject and I don’t quite understand something about it. How do we know that thermodynamics apply to the entire universe? What evidence is there in support of that claim? How does that apply to the whole universe? Is it just an assumption? Please help me out.
kennyk said,
Laws of physics have been shown to be invarient in other reference frames. There is no reason for the laws to be different elsewhere and no known mechanism to change them, so we assume they are the same everywhere. It is a very safe assumption.
Joe said,
The laws of physics apply to the universe as a whole. The principle is that we live in ONE universe so there should be only ONE set of laws that govern it. The laws governing thermodynamics here are the same as those governing a black hole on the other side of the universe.
I believe that you may be specifically referring to the the 2nd law of thermo which talks about entropy. That’s the law physicist often apply to the uuniverse as a whole. It states the for any isolated system the entropy of that system must increase over time. Thus, giving an arrow to time. We can apply this law to the niverse as a whole because it too is an isolated system.
eri said,
1 law of thermodynamics is that energy cannot be created or destroyed but only changed, this law applies to the whole universe
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