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THE Entropy Thread (merged)

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General interest discussions, not necessarily related to depletion.

Some wild ideas on evolution and entropy

Unread postby davidyson » Mon 25 Jul 2005, 13:59:29

Just some wild, probably immature and silly thoughts:

For a while I have been thinking that order comes as a side-effect of the entropic thrust. All forces have an anti-force. Action an reaction. Matter and anti-matter. In order to increase entropy, some order has to be sacrificed for heat and potentially a smaller amount of higher order.

Relatively cool gas clouds form stars under gravitational forces, so that the matter can be converted into heat even quicker.

As soon as the suns are exhausted, they collapse an explode in another burst of entropy. The remainder of the solar system eventually collapses, too and/or gets attracted by another nearby star system, just so wreak havoc there.

In a contracting universe, the same probably happens to whole galaxies and even galaxy clusters. There is always the trend to form more organized structures (with higher density of matter) so that they can cause more entropy.
(In an infinitely expanding universe, all matter eventually gets dispersed infinitely, thereby achieving maximum average entropy.)

As soon as all suns are burnt out, just the background radiation will continue to turn matter into heat, asymptotically approaching maximum entropy.

Now how does evolution fit into this picture? Very simple: Living things are highly organised matter, being able to produce much more entropy than dead matter (except huge accumulations of dead matter like suns) by processing nutrients and multiplying. So places like Earth with lots of "free" energy from our sun should almost inevitable have life on them - it turns the planet so much quicker into heat!

And how does intelligent life fit into this? Look at us - human beings are the crown of creation - they are producing entropy so much quicker than any other species and have even invented weapons that could actually devastate the planet manyfold.

So my thesis is that there is order because there is the law of increasing entropy - they are two sides of a medal, an expression of the universe's symmetry of forces. Order might be like the recoil of entropy. The same applies to life and even intelligent life in places where just the right entropic pressure can be found.

What do you think?

Cheers,

Davidyson

PS: No, I didn't drink or smoke too much of the wrong stuff... ;-)
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Unread postby whiteknight » Tue 09 Aug 2005, 13:19:51

Aren't order and chaos states dependant upon ones point of view?

Take for instance a forest fire.

To the animal within the fire all is chaos, as energy is releaced all manner of things are occuring that seem random in and of themselves. Flaming branches fall and start other things on fire, killing animals who are not fast enough. On and on. Chaos, utter and total.

However take the viewpoint of the human child who is grows up after the fire is over. Now as he grows up, from the disorder of fallen burnt trees slowly other trees grow, other plants come about and animals return. From his perspective order is coming from the chaos.

I think we are applying human viewpoints on natural events and giving them meaning where none may realy be. But then that is humanities lot, we are rationalizing creatures, not neccisarily rational. We seek patterns and often we see the pattern that isnt there.
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Unread postby EnergySpin » Tue 09 Aug 2005, 13:25:07

$this->bbcode_second_pass_quote('whiteknight', 'A')ren't order and chaos states dependant upon ones point of view?

Take for instance a forest fire.

To the animal within the fire all is chaos, as energy is releaced all manner of things are occuring that seem random in and of themselves. Flaming branches fall and start other things on fire, killing animals who are not fast enough. On and on. Chaos, utter and total.

However take the viewpoint of the human child who is grows up after the fire is over. Now as he grows up, from the disorder of fallen burnt trees slowly other trees grow, other plants come about and animals return. From his perspective order is coming from the chaos.

I think we are applying human viewpoints on natural events and giving them meaning where none may realy be. But then that is humanities lot, we are rationalizing creatures, not neccisarily rational. We seek patterns and often we see the pattern that isnt there.

No .. order and chaos might be a form of scientific anthropomorphism, but they can be grounded in mathematical terms i.e. in terms of the Entropy of the distribution of particle positions (or the probability of finding them in a certain position) making up a system. You cannot escape:
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Unread postby whiteknight » Tue 09 Aug 2005, 16:21:45

$this->bbcode_second_pass_quote('EnergySpin', 'N')o .. order and chaos might be a form of scientific anthropomorphism, but they can be grounded in mathematical terms i.e. in terms of the Entropy of the distribution of particle positions (or the probability of finding them in a certain position) making up a system.


Ok... Let me see if I get this then. Since the planet is several million years old we should be in a state of utter and total chaos or at least a state far more chaotic than at the begining? How do we explain the fact that life seems to becomeing more ordered as time passes? Simple single celled creatures evolving into multicellular organizations which evolved from primative forms to more advanced forms. Each time getting more and more efficent at surviving in their environments.

How does this all work with thermodynamics then? A buddy of mine says "when you side with Entropy, you know you are going to win" but I dont see many victories for entropy. If anything the world is getting more organized than less. Resources may be a problem, but thats not entropy, simply a lack of proper recycling. Certainly dino-fuels may be getting hard to come by but we still get plenty of energy fromt he sun and geothermal power, we just need to use more of it.
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Unread postby EnergySpin » Tue 09 Aug 2005, 16:50:54

$this->bbcode_second_pass_quote('whiteknight', '')$this->bbcode_second_pass_quote('EnergySpin', 'N')o .. order and chaos might be a form of scientific anthropomorphism, but they can be grounded in mathematical terms i.e. in terms of the Entropy of the distribution of particle positions (or the probability of finding them in a certain position) making up a system.


Ok... Let me see if I get this then. Since the planet is several million years old we should be in a state of utter and total chaos or at least a state far more chaotic than at the begining? How do we explain the fact that life seems to becomeing more ordered as time passes? Simple single celled creatures evolving into multicellular organizations which evolved from primative forms to more advanced forms. Each time getting more and more efficent at surviving in their environments.
.

Regarding your first question, the answer is yes. The universe is in an more disorganized state now than it was prior to the Bing Bang. If we accept the singularity theory, all mater and energy and space and time was contained in an isolated singularity. Substitituing in the formula, we get H = -Σ p log p where p =1, => H =0.
Since then Entropy has been increasing. In fact the increase in entropy happens along the "arrow of time". This statement won Ilya Prigogine a Nobel Prize ... care to talk about dissipative structures and non-equilibrium thermodynamics to see how life and structure are possible in a universe tending to anarchy and chaos ?. Mind you, you can attack all scientific laws except the laws of thermodynamics. Entropy is grounded on statistical physics (and since 1948 in information theoretic terms) and the thermodynamical laws have been validated so many times that it is not even funny. Newton's classical physics is all about conservation laws; our machines are limited by the conservation laws and fight the battle against entropy. Any plan to refute these laws is futile UNLESS you delve deeper into physical theories of quantum dynamics, QCD and why not string theory and try and come up with a different set of physical laws. That would be fun to watch :roll:
Now ... by beeing here you are at least moderately intelligent and hopefully you will not invoke : Creationism, Intelligent Design and Jesus arguments to refute the LAWS. If you do then I will I wasted my time ... but then again cultural entropy is the ultimate manifestation of the Second Law: it can only get worse
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Unread postby highboom » Tue 09 Aug 2005, 17:07:06

I'm not going to refute what you wrote... I just want to know if you could explain most of that to someone who although smart, needs a little help understanding your calculations.
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Unread postby EnergySpin » Tue 09 Aug 2005, 17:27:05

It can be confusing ... because the word entropy is used in many different contexts. A good introduction (addresses life) can be read here (u do not need to accept the panspermia hypothesis, they just have a good intro in their website)
Wikipedia has a good introduction as well here
The way I try to explain the situation to people is through a hypothetical example:
Consider the list of numbers (which could represent velocities of particles, positions of particles etc) :

A 2
B 2
C 2
D 2
The first law says that their average (which in this case is 2.) should stay the same for ever (after all they are physical properties subject to conservation). The second law says that as time passes, the difference between the individual members should increase till to the maximum if possible. In our example, (and assuming that only values from 0-4 are possible) the system might evolve in the following:
A 0
B 1
C 3
D 4
The average is still 2, but the values are more dispersed. The second situation has higher entropy than the first. In order to restore the system to its previous (organised state) one has to spend energy.
Problems do arise when the different kinds of entropies are mixed together ... i.e. logical, mechanical etc. Good luck with the two pages, they are really good introductiory stuff
If you want to see it in numbers:
The first state: The probability of finding a number with a value of 0,1,3,4
is zero, and the probability of finding a number with the value of 2 is 4/4 =1
The entropy is then equal to zero (the logarithm of 1 is equal to 0).
In the second state, the probability of finding a number with a value of 0 is 1/4, 1: 1/4, 2: zero and 3: 1/4, 4: 1/4 which is a number greater than 0. Entropy has increased. Granted I'm using the information theoretic definition of entropy... just to make the point.
Last edited by EnergySpin on Tue 09 Aug 2005, 17:33:50, edited 1 time in total.
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Unread postby MonteQuest » Tue 09 Aug 2005, 17:29:44

$this->bbcode_second_pass_quote('whiteknight', ' ')
Ok... Let me see if I get this then. Since the planet is several million years old we should be in a state of utter and total chaos or at least a state far more chaotic than at the begining? How do we explain the fact that life seems to becomeing more ordered as time passes? Simple single celled creatures evolving into multicellular organizations which evolved from primative forms to more advanced forms. Each time getting more and more efficent at surviving in their environments.

How does this all work with thermodynamics then?


It's called non-equillibrium thermodynamics. We are so used to thinking of biological evolution in terms of progress, but each higher species in the evolutionary chain transforms greater amounts of energy from a usable to and unusable state. As a species evolves, each succeeding species is more complex and thus better equipped as a transformer of energy. And here lies the answer--the higher the species in the chain, the greater the flow-thru and the greater the disorder created in the overall environment.

2nd Law says that evolution dissipates the overall available energy for life. Our concept of evolution is the exact opposite. Evolution does not magically create greater overall value and order. Look around you at the ever increasing dissipated disorder in our environment. Evolution creates complex order yes, but only at the expense of creating an even greater disorder in the world. Ass backwards, you say? That is only because we are so locked into the existing world paradigm that all other ways of thinking seem unacceptable. 2nd Law is the basis for both life and evolution.

Living things cannot obtain thermodynamic equilibrium or they die, either by heatstroke or hyperthermia as the body tries to equalize with the surrounding environment. The constant flow-thru of neg-entropy keeps us at a non-equilibrium or steady state.
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Unread postby whiteknight » Wed 10 Aug 2005, 02:33:25

Hmm.. sounds to me that Entropy as you all describe it is irrelevant to my life and likely the life of my children and their children. However the great great grand children might want to look into some entropy insurance.

How the heck is this relevant to the next 50 years? Even the next 500 years. If Entropy aint killed us in a billion years how likely is it to kill us next week?

And I am an atheist. Gods need not apply.
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Unread postby MonteQuest » Wed 10 Aug 2005, 02:52:28

$this->bbcode_second_pass_quote('whiteknight', 'H')mm.. sounds to me that Entropy as you all describe it is irrelevant to my life and likely the life of my children and their children. However the great great grand children might want to look into some entropy insurance.

How the heck is this relevant to the next 50 years? Even the next 500 years. If Entropy aint killed us in a billion years how likely is it to kill us next week?

And I am an atheist. Gods need not apply.


Kill us? However, every single physical activity is governed by the 2nd law of thermodynamics or Entropy Law. I suggest you start at the beggining of this thread and read through it. Understanding this law is one of the most important things you will ever learn.
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Unread postby 0mar » Wed 10 Aug 2005, 03:07:53

$this->bbcode_second_pass_quote('whiteknight', 'H')mm.. sounds to me that Entropy as you all describe it is irrelevant to my life and likely the life of my children and their children. However the great great grand children might want to look into some entropy insurance.

How the heck is this relevant to the next 50 years? Even the next 500 years. If Entropy aint killed us in a billion years how likely is it to kill us next week?

And I am an atheist. Gods need not apply.


go learn some science....
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Unread postby whiteknight » Wed 10 Aug 2005, 10:56:38

$this->bbcode_second_pass_quote('MonteQuest', 'K')ill us? However, every single physical activity is governed by the 2nd law of thermodynamics or Entropy Law. I suggest you start at the beggining of this thread and read through it. Understanding this law is one of the most important things you will ever learn.


I read everything posted before posting my questions. It seems this thread is dominated by those who already understand the topic and those of us who dont speak the lingo are just not understanding what the hell the big deal is.

Seems to me it's like discussing when the sun is going to go supernova and destroy us all. It's a problem so far beyond anything we can affect and so far in the future there is no reason for the next three or four generations to seriously concern themselves.
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Unread postby whiteknight » Wed 10 Aug 2005, 10:59:28

$this->bbcode_second_pass_quote('0mar', 'g')o learn some science....


I'm actualy pretty good with applied chemistry and mechanical engineering. My understanding of physics is a bit shaky when you get to the high end stuff. Thsi entropy stuff seems kinda silly, like discussing how gravity affects Peak Oil or maybe how the Van Allen belts affect Peak Oil. I just fail to see the relevance.
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Unread postby Antimatter » Wed 10 Aug 2005, 11:07:21

Other than outlawing free energy schemes etc, and giving an appreciation for boundaries to efficiency improvments (carnot cycle etc), it's not especially earth shattering. Arguing that the second law precludes technological society from continuing is like saying gravity means we are doomed never to walk, IMO.
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Unread postby MonteQuest » Wed 10 Aug 2005, 12:19:07

$this->bbcode_second_pass_quote('whiteknight', ' ')Seems to me it's like discussing when the sun is going to go supernova and destroy us all. It's a problem so far beyond anything we can affect and so far in the future there is no reason for the next three or four generations to seriously concern themselves.


When it comes to the heat death of the universe, you are right. But when it comes to converting methane into hydrogen, or pumping oil from the ground, it's another story altogether.

The future will be called the Entropy World.
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Unread postby MonteQuest » Wed 10 Aug 2005, 12:20:47

$this->bbcode_second_pass_quote('Antimatter', 'O')ther than outlawing free energy schemes etc, and giving an appreciation for boundaries to efficiency improvments (carnot cycle etc), it's not especially earth shattering. Arguing that the second law precludes technological society from continuing is like saying gravity means we are doomed never to walk, IMO.


The entropy watersheds we face says otherwise.
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Unread postby whiteknight » Fri 12 Aug 2005, 23:56:18

$this->bbcode_second_pass_quote('Antimatter', 'A')rguing that the second law precludes technological society from continuing is like saying gravity means we are doomed never to walk, IMO.


Very good point.

After all, from what I read the sacred second law is about closed systems. Say I lock a cat, two mice and a pack of peanuts in a steel box with no holes punched in it. Entropy applies and does so pretty damn quick.

However on a planet like the earth while yes we do radiate heat out into space (at a rate that is drasicly fast for entropy heads but not fast enough for global warming supporters) we get heat and light from the sun and until the sun goes out we will keep getting it, keep making more peanuts to feed more mice to feed more cats.

Seems the best answer to offest entropy is to increase carbon emmisions so we can trap more of the precious heat from all the energy we consume. Who wins, the radiating of heat or the greenhouse gases trapping that heat?
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Re: <>

Unread postby EnergySpin » Sat 13 Aug 2005, 00:14:31

$this->bbcode_second_pass_quote('', 'S')eems the best answer to offest entropy is to increase carbon emmisions so we can trap more of the precious heat from all the energy we consume. Who wins, the radiating of heat or the greenhouse gases trapping that heat?

This would actually accelerate GW and increase entropy. Besides fossil fuels are running out! This is why we call it PO :roll:
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Unread postby MonteQuest » Sat 13 Aug 2005, 00:16:34

$this->bbcode_second_pass_quote('whiteknight', '')$this->bbcode_second_pass_quote('Antimatter', 'A')rguing that the second law precludes technological society from continuing is like saying gravity means we are doomed never to walk, IMO.


Very good point.

After all, from what I read the sacred second law is about closed systems. Say I lock a cat, two mice and a pack of peanuts in a steel box with no holes punched in it. Entropy applies and does so pretty damn quick.

However on a planet like the earth while yes we do radiate heat out into space (at a rate that is drasicly fast for entropy heads but not fast enough for global warming supporters) we get heat and light from the sun and until the sun goes out we will keep getting it, keep making more peanuts to feed more mice to feed more cats.


2nd law applies whenever energy is transformed from one form to another. It matters not whether it is an open, closed or, isolated system. However in an isolated system, entropy will always increase.

And for the thousandth time, we are not talking about the thermodynamic equillibrium with space. 2nd law can take place in any physical activity and within any smaller system on earth.

In a declining energy environment, the last thing you need is a new energy consumer. Complex technology is just that--an energy consumer, with all of the by-products of energy transformation that we call pollution and waste. This takes even more energy in the long-run to deal with it than you gained from the short-term utliity. No free lunches. Cleaning up a mess creates an even bigger mess. Always will. 2nd law forces us to be always playing catch up.

If you don't grasp that concept, you will never grasp the import that 2nd law has on everything that we do.
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Unread postby whiteknight » Sat 13 Aug 2005, 15:42:26

$this->bbcode_second_pass_quote('MonteQuest', '
')In a declining energy environment, the last thing you need is a new energy consumer. Complex technology is just that--an energy consumer, with all of the by-products of energy transformation that we call pollution and waste. This takes even more energy in the long-run to deal with it than you gained from the short-term utliity. No free lunches. Cleaning up a mess creates an even bigger mess. Always will. 2nd law forces us to be always playing catch up.


So, the sun doenst give us buttloads of energy? We cant grow more biomass which stores the suns energy and consumes the carbon that burning the biomass produces? No matter how "green" the technology is we are Doomed Doomed Doomed Doomed Doomed all because of the dreaded Second Law of Thermodynamics?

Sounds the same as a cross cultist using some obscure passage from the bible to justify his view that the world ends next thursday afternnon at 5 PM.

Oh, I forget, since I dont understand "SCIENCE!!!" I am just not getting how VITAL this all is to our very SURVIVAL!

Got it, me moron, you genius. Me send you all me money to get you book on how me so screwed. Uggh.
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