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Messages 1382 - 1411 of 2188   Oldest  |  < Older  |  Newer >  |  Newest
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1382
Hello all, About a year ago, we had here in undernetphysics what I thought was a fantastic discussion on some of the fundamental interpretational issues of QM....
David Strayhorn
straycat_md
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Jan 6, 2005
10:55 am
1383
Hello, I would like second (and more) opinions on comments i received from a physicist in response to my observations on a certain experimental setup designed...
CelalB@...
celal777
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Jan 12, 2005
6:04 am
1384
Hi Celal, ... Entropy isn't really "order" or "disorder" (that is the "intuitive" usage and usually leads one astray). Entropy (or "negentropy") in...
Thomas D. Gutierrez
szicarus
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Jan 12, 2005
7:59 am
1385
Hi David, Whoa! I started looking at your posted documents. You have obviously done a LOT of work on this over the past year. I can't comment at the moment...
Thomas D. Gutierrez
szicarus
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Jan 12, 2005
8:07 am
1386
Thank you Tom. Your explanation is much appreciated. Celal ... From: Thomas D. Gutierrez [mailto:tgutierr@...] Sent: 12 January 2005...
Celal Berker
celal777
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Jan 12, 2005
9:37 am
1387
... But, ... Hey Tom, Yup, they've gone through lots of drafts! Keep in mind that Part III, more than I or II, still needs LOTS more revision, in *substance*...
David Strayhorn
straycat_md
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Jan 12, 2005
11:52 am
1388
As time passes, the formal entropy of an isolated system goes from the sum over states r, of -P_r ln(P_r) to the sum over states r' of - P_r' ln(P_r') where...
video_ranger
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Jan 14, 2005
4:54 pm
1389
Entropy always increases, there is no paradox. All systems tend to move toward chaos. [Non-text portions of this message have been removed]...
John Tarver
tarverengine...
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Jan 16, 2005
8:44 pm
1390
... Yes - there are no insoluble paradoxes (antinomies) in physics. I don't find it surprising someone might wonder how a deterministic, isolated system can...
video_ranger
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Jan 16, 2005
10:35 pm
1391
... All non-equilibrium systems *tend* to move toward equilibrium. This move to equilibrium is attended by entropy increase. At equilibrium, systems will...
Igor B
herbegd
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Jan 17, 2005
7:05 pm
1392
Hey Igor, ... it to ... law, ... system ... I can see that this would be true for classical deterministic systems, like for the pre-quantum classical...
David Strayhorn
straycat_md
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Jan 17, 2005
10:45 pm
1393
That entropy must always increase has to so with chaos, not information. Each system will tend toward chaos over time and less information. [Non-text portions...
John Tarver
tarverengine...
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Jan 17, 2005
10:47 pm
1394
Hi David, Since quantum theory is time reversal invariant, the same general ideas work. They are just harder to visualize ;-) The main point is that Wave...
Igor B
herbegd
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Jan 18, 2005
4:56 am
1395
Yes. Igor B <igorbivor@...> wrote: [Non-text portions of this message have been removed]...
John Tarver
tarverengine...
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Jan 18, 2005
5:28 pm
1396
When the discussion is moved to hypothetical systems which have peculiar initial conditions, it would be helpful to define what you mean by the entropy of such...
video_ranger
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Jan 18, 2005
5:53 pm
1397
Integral form of the math easily demonstrates vr's concept, but few outside engineering and mathematics can visualize an integral. Obviously, the general form...
John Tarver
tarverengine...
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Jan 18, 2005
7:41 pm
1398
Taking the classical picture still, in order stop all the billard ball-air particles in their tracks and reversing their momentum would require an external...
booom0r1
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Jan 18, 2005
11:09 pm
1399
... I was not trying to describe a Maxwell's demon. The reversed momentum system is an entirely separate system that instead of showing increasing entropy...
Igor B
herbegd
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Jan 19, 2005
1:51 pm
1400
Hello Listmembers, I am thinking of acquiring and going through a textbook on thermodynamics. In my research so far i have come to the tentative conclusion...
CelalB@...
celal777
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Jan 19, 2005
3:16 pm
1401
Dear CelalB, Wednesday, January 19, 2005, 5:16:00 PM, you wrote: Coau> I am thinking of acquiring and going through a textbook on Coau> thermodynamics. It...
yura
yuraphys
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Jan 19, 2005
5:00 pm
1402
Thank you Yuri, These books are a lot of money so your advice is very helpful indeed. Do you have any views about F.Mandl's "Statistical Physics" ? It looks...
Celal Berker
celal777
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Jan 19, 2005
5:30 pm
1403
There is at least some small probability that the balls will stop and reverse on their own, but as you say, entropy considerations make that possibility...
John Tarver
tarverengine...
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Jan 19, 2005
7:37 pm
1404
Hi Celal, I'd like to add my two cents worth about the best thermodynamics text. I can relate to this because thermo was one of the hardest topics for me when...
Scott Johnson
scjphysicist
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Jan 19, 2005
10:24 pm
1405
Hey eager b, I think that what you are essentially saying is that the schrodinger equation is time-reversible. The question in my mind is whether QM in general...
David Strayhorn
straycat_md
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Jan 19, 2005
10:26 pm
1406
Thank you Scott for your discussion and recommendations. I am not yet familiar with Liouville's Theorem but have been thinking a lot lately about phase space...
CelalB@...
celal777
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Jan 19, 2005
10:49 pm
1407
My pleasure, Celal. If you want an excellent barely-mathematical intro to Liouville's theorem, it's in the Penrose (Emporer's New Mind) section entitled...
Scott Johnson
scjphysicist
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Jan 20, 2005
7:58 am
1408
Hi David, Wow! You have produced quite a magnum opus in your "Foundations of QM" series. You're quite right that I am fascinated by this. You have probably...
Scott Johnson
scjphysicist
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Jan 20, 2005
8:38 am
1409
Hey Scott! Glad to see you here. I'm pretty busy too, so I hope my replies aren't too slow in the coming. ... I actually don't really know GR all that well...
David Strayhorn
straycat_md
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Jan 20, 2005
12:42 pm
1410
Hello Tom, Yes, it does appear that information has increased in the end , however, i think this is misleading since i think he is mispecifying the initial...
CelalB@...
celal777
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Jan 20, 2005
1:08 pm
1411
... (I ... particular, ... That's an interesting way of looking at things. Haven't seen the book but your description makes the idea pretty clear. To relate it...
video_ranger
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Jan 20, 2005
5:49 pm
Messages 1382 - 1411 of 2188   Oldest  |  < Older  |  Newer >  |  Newest
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