Thread: Entropy question

I'm a little stumped here, as I am having a conversation on entropy at the moment, where my opponent claims that the end result of universal entropy is that all matter and energy will slowly diminish to nothing, and I am firmly against this idea. Anyone have a better theory/reasoning for me?

Mirroring thread in physics, just for good measure.

Originally Posted by Arcane_Mathematician

I'm a little stumped here, as I am having a conversation on entropy at the moment, where my opponent claims that the end result of universal entropy is that all matter and energy will slowly diminish to nothing, and I am firmly against this idea. Anyone have a better theory/reasoning for me?

Mirroring thread in physics, just for good measure.

Assume the universe just keeps expanding forever (keeping in mind there are theories which have a different long term scienario). Then the energy density of the universe will tend to zero, although the total energy (including matter) will remain the same. However the entropy increase means that the universe will tend to a constant temperature, which becomes tends to zero because of the expansion.

But, there will still be pockets of higher temperature and pockets of matter, right?

!0^100 years maybe , don't think I would lose sleep over it