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I like to think of entropy as a sort of Universal Tax. The only way to escape it is to do absolutely nothing!
Quote from: Geezer on 03/01/2012 07:21:58I like to think of entropy as a sort of Universal Tax. The only way to escape it is to do absolutely nothing!I don't think doing "absolutely nothing" is necessarily enough to escape entropy. Gravity alone, given half a chance and enough time is likely to increase entropy.
Quote from: MikeS on 03/01/2012 07:41:47Quote from: Geezer on 03/01/2012 07:21:58I like to think of entropy as a sort of Universal Tax. The only way to escape it is to do absolutely nothing!I don't think doing "absolutely nothing" is necessarily enough to escape entropy. Gravity alone, given half a chance and enough time is likely to increase entropy. In that case, gravity is doing something by altering energy states, so it is not doing nothing.
If the observable Universe started with the Big Bang, that, as Roger Penrose stresses, (quick spot of name dropping, there) must have been a very special, low entropy condition. However, once we introduce the idea of the infinite we have to accept that the Big Bang could not have been the start of everything. Something must always have existed. For convenience lets call that something the cosmos. We now have to ask questions like: Does the 2nd law apply to the cosmos? On the face of it, it might seem reasonable to suggest that it does, but if the cosmos is infinite then entropy must have maxed out infinitely long ago. In this case the 2nd law and the increase of entropy must be local phenomena, and may be no more than illusions that are necessary to allow us to make sense of our 4D Universe.
Aaaah butIf antimatter is ordinary matter going backwards in time then it exerts negative gravity upon ordinary matter. In which case a black hole recycles matter into antimatter (or vice verse) thereby reversing entropy.And yes, I know this is not a mainstream idea but there is nothing to the best of my knowledge in physics that precludes it. Personally, I believe this is how the Universe works. One or multiple black holes at the end of one universe cycle become white holes at the start of the next. The arrow of time reverses thereby reversing entropy. So, the above is not an infinite universe but rather an infinite series of finite universe cycles. Each full cycle consists of a matter universe followed by an antimatter universe. At the end of each full cycle the total time that they have existed as a pair is zero.The beauty of this version of a cyclic universe is that by reversing the arrow of time, entropy is reversed and at the start of each universe cycle the universe starts with a full complement of elementary particles, namely hydrogen and helium atoms, the fuel the universe relies upon to create everything else.Again I must stress this is not a mainstream idea.
Note to moderator who hid the last posts by Phractality and myself.Clicking on them does absolutely nothing!I guess, some may think this yet another system improvement. Sorry Dave.
ClipI don't mean to seem repetitive, but I would love to hear your thoughts to this: is the local decrease in entropy in the formation of the first DNA molecule only explained by an average increase in entropy? Or are there other explanations that might potentially explain this decrease?And if the average increase of entropy is the only scientific explanation (though you might find it completely sufficient), do any of you find it at all significant to note that, even if as Geezer suggests that the formation of DNA overall increases entropy and the numbers add up, it is never-the-less plain to see that at the moment and place a DNA molecule was spontaneously formed, entropy spontaneously decreased to allow it? Is that not significant?
Hi PhracWhat I wrote in the previous post was based on a theory I wrote about twenty years ago (which I can prove if need be). I mentioned it in my post as I believe it is very relevant to entropy. If correct, it is the only mechanism whereby entropy can be reversed.