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Author Topic:   Thermodynamics
crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 23 of 159 (184861)
02-13-2005 11:08 AM
Reply to: Message 1 by Jordo86
02-13-2005 6:57 AM


The law that the universe is moving from order to disorder
Could you substantiate that this is indeed the second law of thermodynamics? The second law I'm familiar with says that, in a closed system, the avaliable energy to do work decreases over time. It says nothing of order and disorder.
How does the theory of evolution get around the 2nd law of thermodynamics?
Evolution has no need to "get around it", in fact, evolution - or any life process - could not occur if the second law was not in effect:
1) Life chemistry is entropic. The chemistry of living things uses energy to do work, leaving less energy avaliable for work when its done. That's the second law.
2) Evolution requires imperfect replication of genetic material. An overall trend from order to disorder ensures this will be the case.
In order for biological evolution to work simple species are supposed to "evolve" and build upward, becoming more complex.
Well, wait, now. Complexity and order are not the same thing. The second law says nothing about complexity. In fact, complexity and order are almost the opposite thing. Ordered systems are very, very simple. Complex systems are very disordered.
A fully-constructed house may be complex, but its in a significantly less ordered state than organized piles of lumber on your lawn.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 78 of 159 (185160)
02-14-2005 2:17 PM
Reply to: Message 45 by Jordo86
02-13-2005 8:17 PM


Why do complex systems have to be disordered?
Because that's what order means. A dictionary is very ordered, but meaningless if read cover to cover. It's too simple. On the other hand, the words in Hamlet are disordered - nonalphabetical - and yet, it's one of the most complex works in the English language.
I'm using very simple examples, but "order" and "complexity" are two very, very different things, and are often mutually exclusive.
Look at humans, we are incredibly complex beings but with order to match.
I don't see the order. Humans are composed of, roughly:
quote:
# 65% Oxygen
# 18% Carbon
# 10% Hydrogen
# 3% Nitrogen
# 1.5% Calcium
# 1% Phosphorous
# 0.35% Potassium
# 0.25% Sulfur
# 0.15% Sodium
# 0.15% Chlorine
# 0.05% Magnesium
# 0.0004% Iron
# 0.00004% Iodine
Now, an ordered state would be all those elements in separate jars, in a row. That's order. "Complexity" is how they're arranged in the human body, but they're pretty evenly distributed throughout your body, and so are disordered.
Don't conflate "order" and "complexity." The second law says nothing about complexity.
And the complexity of our eyes alone (i bet you get this one a lot ) i beleive defy evolution.
Yet, the existence of an entire continumm of eyes in the natural world, from simple to more complex, is evidence that evolution is accurate.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 79 of 159 (185163)
02-14-2005 2:21 PM
Reply to: Message 61 by Jordo86
02-14-2005 11:42 AM


Re: Workmen
I still think a house is ordered, but in the sense that all the pieces are now mixed with other pieces instead of neat little piles...
That state is called "disordered." When things are all mixed up? Disorder.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 81 of 159 (185247)
02-14-2005 5:42 PM
Reply to: Message 80 by NosyNed
02-14-2005 5:37 PM


I thought JonF's post made it clear that isn't what the 2nd law is about.
Sure, but it's reasonable to suggest that a general trend towards disordered configurations exists in the universe. If objects are arranging themselves randomly, we would expect them to be more likely to arrange themselves into disordered, mixed-up configurations, not orderly ones, where different states or items are separated into groups.
Of course, that's not even universally true - a bag of peanuts sorts itself by size, no matter how you shake it up - as long as the bag is affected by gravity.
The second law makes no reference to order. Nonetheless, with randomness in the picture, we would expect disorder. Which is exactly what we find, all over the place. Living things are very disordered.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 98 of 159 (185418)
02-15-2005 12:57 AM
Reply to: Message 91 by Jordo86
02-14-2005 8:40 PM


Re: Gamble
.well i dont beleive it is impossible but i dont like those odds.
The thing about these odds, though, is that you only have to win once, and you get to try hundreds of times every second.
At that rate, almost any odds becomes a certainty.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 99 of 159 (185419)
02-15-2005 12:59 AM
Reply to: Message 93 by Jordo86
02-14-2005 8:44 PM


I wish you'd address Percy's posts and not mine. I'm just quibbling with your word choice and trying to how you how your argument doesn't follow from the first principles you've chosen.
Percy's actually trying to show you what first principles are at work in the universe. You might have a good time talking to me, but if you talk more with Percy you'll actually learn something. I would think that would be your priority.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 103 of 159 (185633)
02-15-2005 5:20 PM
Reply to: Message 100 by mihkel4397
02-15-2005 4:15 PM


Re: Getting around the 2nd Law
Evolution isn't a reduction in entropy, though.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 113 of 159 (186167)
02-17-2005 11:06 AM
Reply to: Message 107 by Jordo86
02-17-2005 5:35 AM


Assuming my definition of the law is correct (energy can only be converted, not created or destroyed) how did the universe create itself?
I can think of two rhetorical responses:
1) What makes you think that a law that operates within the universe applies to the universe?
2) What is the total net energy content of the universe? How do you know its more or less than zero?

This message is a reply to:
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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 122 of 159 (186411)
02-17-2005 9:33 PM
Reply to: Message 118 by Jordo86
02-17-2005 9:21 PM


And about your second question, i would have thought there must have been more than zero right?
Not necessarily. If all the energy here is counterposed by opposite energies there, then the universe has a net energy of zero, and so it doesn't violate the first law.

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 126 of 159 (186440)
02-18-2005 1:34 AM
Reply to: Message 125 by Jordo86
02-18-2005 1:26 AM


But how did the energy "here" come about?
Probably through the same quantum process that makes energy spring up out of the vacumn - pairs of opposing particles flit in and out of existence at every point in space, constantly. Each particle in the pair has non-zero energy; taken together they have net zero energy because they cancel out.
You can pretty much have all the particles and energy you want so long as the sums cancel each other out in the end. Well, maybe that's an overstatement.

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 Message 125 by Jordo86, posted 02-18-2005 1:26 AM Jordo86 has replied

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crashfrog
Member (Idle past 1498 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 130 of 159 (186507)
02-18-2005 10:58 AM
Reply to: Message 129 by Jordo86
02-18-2005 10:55 AM


I was just wondering if evolutionists did in fact have an answer for the first step in the origins of the universe.
Evolution is a theory of biology; its developers and researchers are therefore biologists.
The origin of the universe is a problem of cosmology. It's like you're asking a tax accountant for medical advice. Cosmic origins aren't an evolutionary field.

This message is a reply to:
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Replies to this message:
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